Can I connect this 12V 628Ah Ultra LiFePO4 battery with two 12V 314Ah Mini LiFePO4 batteries?

Not recommended. There are four key rules for connecting WattCycle batteries in series or parallel: Same brand Same voltage Same capacity (Ah rating) Manufacturing/purchase date not older than 6 months Mixing different models may lead to imbalance and affect system performance and safety.

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5+2 Years Warranty
24/7 Customer Support

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WattCycle 12V 628Ah Ultra Lithium Battery with Bluetooth

€999,99 EUR€1.599,99 EUR

Certified Quality & Safety

Key Features

L480 x W362 x H242 mm, 59.81 kg
3840W Output Power, 8038Wh Usable Energy
Equivalent Usable Energy to 2 x 12V 314Ah Mini Bluetooth Batteries in Parallel
Ultra-powerful 300A BMS, 300A Max. Cont. Dis-/Charge Current, 310A ± 10A @ 1.2s Peak Discharge Current
Real-Time Monitoring via WattCycle App
Supports 4P4S Connection to 128,6 kWh Energy
Certifications: IEC, CE-EMC, CE-RoHS, CE-Battery, FCC-SDOC, UN38.3, MSDS

Options

1 Pack (8.03 kWh) 2 Pack (16.07 kWh) 3 Pack (24.11 kWh) 4 Pack (32.15 kWh)

Secure Your Motorhome

No ECE R10 Version With ECE R10 Version

Free & Fast Shipping: Enjoy free shipping on your orders. The estimated shipping time varies by country. More information on Shipping Policy
Germany/Poland Local Warehouses: Orders are dispatched directly from our Local Germany/Poland Warehouses.
Instant Savings via Local Pickup: Contact us to pick up at our German/Polish warehouse for exclusive savings and avoid courier wait times.
Canary Islands (Spain) Shipping: You can shop our full range with ease via the GUANXE.COM App.

Thank you for choosing WattCycle for your LiFePO4 battery needs! We understand that getting your batteries quickly and safely is important to you. This policy outlines the shipping process for WattCycle orders.

Shipping Origin

WattCycle Orders are shipped from Germany or Poland.

Shipping Carrier

DPD, DHL & INPOST

Please contact our customer service team to find out which carrier to use.

Destinations

Germany, Austria, Belgium, Luxembourg, Netherlands, Czech Republic, Denmark, France, Hungary, Italy, Poland, Slovakia, Slovenia, Ireland, Portugal, Spain, Sweden, Croatia, Estonia, Finland, Latvia, Lithuania, Bulgaria, Greece, Romania.

Shipping time

Our shipping time is divided into two parts, starting from the time you place your order:

Processing time: 1-2 business days

Shipping time: 2-7 business days

Attention: The above transit time is for reference only and applies to most orders. It does not include inspection time, other special circumstances, or uncontrollable factors such as natural disasters, congestion, etc.

The average shipping time in the table below is for your reference

Country	Average shipping time(Business Days)
Poland	2
Germany	4
Lithuania	4
Czech Republic	4
Hungary	4
Austria	4
Slovakia	4
Estonia	4
Belgium	4
The Netherlands	5
Denmark	5
Italy	5
Latvia	5
Romania	5
Slovenia	6
Finland	6
Sweden	6
France	6
Luxembourg	6
Bulgaria	6
Ireland	6
Croatia	6
Portugal	7
Spain	7
Greece	10

Shipping cost

All WattCycle orders are FREE SHIPPING.

The shipping will be delayed for some objective or uncontrolled reasons. We will notify our customers ahead of delays.

Shipping Notification

Please ensure that you enter the correct name, address, and contact information during checkout to facilitate smooth delivery of your order.

If you entered an incorrect address for your order and have already made payment, please contact us promptly to modify the shipping address.

Attention: If you request a change of address after your order has been shipped, we cannot guarantee that the updated address will be applied. Additionally, you will be responsible for all associated risks and costs that may arise from altering the address post-shipment.

The following areas are areas where DPD cannot complete the delivery. We can change the shipping company for you, but you may need to pay for the postage.

Non-shippable Areas/Islands

Country/Region	Non-shippable Areas/Islands	Postal Code Range/Specific Codes
Denmark (DK)	Bornholm	3700, 3720, 3730, 3740, 3751, 3760, 3770, 3782, 3790
Denmark (DK)	Other Areas	4592, 5960, 5970, 5985, 6720, 7884, 8305, 8592, 9940, 9950, 9960
Greenland (GL)	Entire Territory	3900-3999
Faroe Islands (FO)	Entire Territory	FO100-FO3999
Germany (DE)	Hiddensee	18565
Germany (DE)	North-Friesland Islands	25849, 25859, 25863, 25869, 25938, 25946, 25980, 25992, 25996-25999
Germany (DE)	East-Friesland Islands	26465, 26474, 26486, 26548, 26571, 26579, 26757
Germany (DE)	Helgoland	27498
Germany (DE)	Neuwerk	27499
Germany (DE)	Chiemsee	83256, 78266
Estonia (EE)	Other Areas	62601, 88001-88005, 91217, 91301-91320, 92001-92420, 93001-94799, 96027, 96098
Finland (FI)	Åland Islands	22000-22999
France (FR)	Corsica	20000-20999, 97000-97999, 98600-98999
France (FR)	Other Areas	17111, 17123, 17190, 17310, 17370, 17410, 17480, 17550, 17580, 17590, 17630, 17650, 17670, 17740, 17840, 17880, 7940, 22870, 29242, 29253, 29259, 29990, 56360, 56590, 56780, 56840, 85330, 85350
Gibraltar (GI)	Entire Territory	GX11
Greece (GR)	Saronic Islands	180xx, 189xx
Greece (GR)	Ionian Islands	28xxx-29xxx, 31xxx, 49xxx
Greece (GR)	Mount Athos (Berg Athos)	63086-63087
Greece (GR)	Crete & Aegean Islands	70xxx-74xxx, 80xxx-85xxx
Italy (IT)	Pontine Islands	04020, 04027
Italy (IT)	Sardinia	07000-09999
Italy (IT)	Venetian Lagoon	30010, 30012, 30100, 30121-30126, 30131-30133, 30135, 30141
Italy (IT)	Elba & Tuscan Archipelago	57030-57039, 58012-58013, 58018
Italy (IT)	Tremiti Islands	71040
Italy (IT)	Gulf of Naples Islands	80070-80071, 80073-80077, 80079
Italy (IT)	Sicily Surrounding Islands	90010, 91017, 91023, 92010, 98050, 98052, 98055
Italy (IT)	Livigno	23030
Italy (IT)	San Marino	47031, 47890-47899
Italy (IT)	Campione d'Italia	22061
Malta (MT)	Comino	KMN
Malta (MT)	Gozo	FNT, GRB, GSM, GSR, KCM, MFN, MXR, NDR, QLA, SLZ, SNT, VCT, XLN, XRA, XWK, ZBB
Netherlands (NL)	Other Areas	1156AA-1156ZZ, 1791AA-1797ZZ, 8881AA-8884ZZ, 8891AA-8897ZZ, 8899AA-8899ZZ, 9161AA-9164ZZ, 9166AA-9166ZZ
Norway (NO)	Svalbard	9170-9179
Norway (NO)	Jan Mayen Island	8099
Portugal (PT)	Madeira	9000-9390
Portugal (PT)	Porto Santo	9400
Portugal (PT)	Azores	9500-9980
Russia (RU)	Crimean Federal District & Sevastopol	29xxxx
Spain (ES)	Balearic Islands	07000-07999
Spain (ES)	Ceuta & Melilla	51000-52999
Spain (ES)	Canary Islands	35000-35900, 38000-38900
Sweden (SE)	Other Areas	10005, 13025, 13033-13034, 13036-13039, 13042-13043, 13055-13056, 37022, 43080-43099, 45204-45205, 47112-47115, 47500-47599, 62000-62999, 74296-74297, 76017-76019, 91803
Turkey (TR)	Northern Cyprus	99xxx
Turkey (TR)	Other Areas	10360-10389, 10405, 10940-10974, 17680-17699, 17760-17799, 34970-34977
Ukraine (UA)	Autonomous Republic of Crimea & Sevastopol	95xxx-98xxx, 99xxx

Tracking Your Order

Once your order ships, you will receive a notification email with a tracking number. You can use this tracking number on the carrier's website to track the progress of your shipment.

Carrier Official Website Tracking:

DPD: https://www.dpd.com

DHL: https://www.dhl.com

INPOST: https://inpost.pl

Inspection & Signature

Upon receiving your WattCycle package, please first inspect the outer box to ensure it remains intact and properly sealed. If you (or someone acting on your behalf) sign for a damaged or deformed package, WattCycle will consider the package accepted. To protect your rights, WattCycle strongly advises recording a complete unboxing video and verifying the items against the packing list.

Attention:

Damaged Packaging: If the packaging shows signs of damage or deformation, do not sign for or open the package. Contact us immediately to report the issue.

Missing/Damaged Items: If products are missing or damaged within the package, notify us within 24 hours of receipt.

Disclaimer

WattCycle shall not be held liable for order delays or rejections caused by the following reasons:

Remote Delivery Addresses: Shipping times may be delayed by 1–2 days due to remote delivery locations.

Recipient-Related Delays: Delays or failed deliveries caused by the recipient’s actions, including but not limited to:

Address changes after shipment.
Providing unknown, invalid, or incorrect addresses.
Providing incorrect contact information.
Refusal to accept the package.

Force Majeure Events: Delays due to unforeseeable, unavoidable, or insurmountable circumstances, including but not limited to:

National or regional air/ground transportation disruptions (e.g., weather-related issues).
Communication system interference or malfunctions.
Government actions or changes in postal policies.
Wars, earthquakes, typhoons, floods, fires, heavy rain, fog, or similar events.

Prohibited Air Cargo: Items restricted by aviation safety regulations, including: Contraband, mobile phones, electronics, fragile goods, or other items ineligible for air transport.

Confiscated Shipments: Parcel confiscation or disposal due to violations of shipping regulations.

Holiday/Non-Working Day Delays: Inability to deliver during weekends, national holidays, or public observances.

Inaccessible Locations: Failed deliveries to schools, workplaces, or residential areas unreachable by couriers.

Information Security

WattCycle values user privacy and keeps all information confidential. We will never sell your information or use it for any purpose other than delivering your order.

Changes to This Policy

We reserve the right to modify this Shipping Policy at any time. We will post any changes to this policy on our website. We appreciate your support! If you have any questions about our shipping policy, please feel free to contact us.

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Free & Local Shipping
VAT Included
5+2 Years Warranty
24/7 Customer Support

Payment Method

WattCycle 12V 628Ah Ultra Bluetooth LiFePO4 Battery

WattCycle 12V 628Ah Ultra Lithium Battery with Bluetooth

€999,99 EUR

€1.599,99 EUR

Feature
Tech Specs
Faqs
Reviews

12.8V Voltage
628Ah Capacity
3840W Max. Load Power
8038.4Wh Usable Energy

Beyond Capacity: 12V 628Ah Capacity Test Result

Look at Juki's test result of the capacity of the 12V 628Ah battery. It shows 667,69Ah capacity & 8530,95Wh usable energy, much higher than the 628Ah capacity.

Don't just get the rated capacity, get more kilometers, more minutes, more peace of mind.

A higher initial capacity means you start with a bonus. For you, this translates directly into extended runtime for your devices, increased cycle life as the battery ages, and a valuable performance buffer under demanding conditions.

Beyond Capacity: 12V 628Ah Capacity Test Result

Unleashing the Future of Energy – 12V 628Ah Ultra Bluetooth Battery

Experience cutting-edge LiFePO4 energy storage with the WattCycle 12V 628Ah Ultra Bluetooth battery, designed for unmatched reliability, efficiency, and scalability. Built with EV-grade A+ prismatic cells and a powerful 300A BMS, it provides advanced 6X protection. With configurable 4P × 4S expansion, this LiFePO4 deep cycle battery can scale up to an impressive 128.61kWh, making it ideal for large-scale solar systems, motorhomes, marine vessels, and off-grid installations.

Foremost Bluetooth Monitoring & Control

With built-in Bluetooth 5.0 connectivity, the WattCycle App gives you complete control of your 12V 628Ah Ultra lithium battery right from your smartphone. Instantly track real-time data such as voltage, current, and cell temperature, and adjust key parameters.
This intelligent Bluetooth ensures your 12V 628Ah Ultra LiFePO4 deep cycle battery is always operating at peak performance. Whether powering an off-grid solar system, driving a campervan energy setup, or supporting a marine power bank, you gain full visibility and the ability to fine-tune performance with just a few taps. It’s smarter, safer, and more convenient energy management designed for demanding applications.

Rugged Protection for Extreme Climates

Engineered for reliability in all seasons, the WattCycle 12V 628Ah Ultra Bluetooth lithium battery integrates advanced thermal management to safeguard performance in both freezing winters and sweltering summers. Charging is automatically paused below 0℃ and resumes only once the temperature rises above 5℃, while discharging is halted below–20℃ to prevent internal cell damage.
This intelligent design ensures the 12V 628Ah Ultra LiFePO4 deep cycle battery delivers consistent, uninterrupted energy even in the harshest environments. Whether powering remote off-grid cabins, caravans in icy climates, or marine systems exposed to intense heat, you can count on dependable long-term operation with no compromise in safety or efficiency.

Outstanding Performance Over Lead-acid Batteries

The WattCycle 12V 628Ah Ultra lithium battery sets a new benchmark in durability and safety compared to outdated lead-acid systems. Compared with 3 Pack 12V 200Ah lead-acid batteries, this 12V 628Ah delivers 2.23 times the usable energy of the lead-acid ones. Although it provides more energy, it weighs nearly 50% lighter than the lead acid batteries. Whether installed in a warehouse, boat, or backup power system, this 12V 628Ah battery delivers unmatched reliability and efficiency.

Scalable High-capacity Energy Solutions

Each WattCycle 12V 628Ah Ultra LiFePO4 battery delivers an impressive 8,038.4Wh of usable energy in a compact design (L480 x W362 x H242 mm | 59.81 kg). For larger projects, up to 16 units can be configured in a 4P4S system(4 in parallel and 4 in series), creating a powerful 51.2V 2512Ah bank with a massive 128.61kWh energy. This modular architecture ensures maximum flexibility, allowing you to scale energy storage from a single battery to a full residential microgrid or large-scale commercial backup system.

Three Charging Methods, Always Stay Energized

There are 3 charging methods to charge the 12V 628Ah Ultra Bluetooth LiFePO4 battery, making you no longer fear energy shortage. Charging it with the WattCycle 12V 60A LiFePO4 battery charger, it only takes 10.46 hours to fully charge the 12V 628Ah Ultra battery, significantly faster than traditional lead-acid batteries. For added convenience, 2 additional charging methods are provided: solar panels with an MPPT and generators, which offer versatile solutions to keep your battery powered in any environment, whether on the road, at sea, or off-grid.

Reliable Energy Solutions for Whatever Life You Lead

The WattCycle 12V 628Ah Ultra LiFePO4 battery is engineered for versatility, making it the ideal choice for both residential and commercial energy needs. From home energy storage and remote off-grid microgrids to marine vessels and long-distance campervan travel, this LiFePO4 deep cycle battery provides stable, long-lasting power. In mission-critical systems such as UPS backup or telecom stations. Whether powering a cabin, supporting a solar array, or delivering reliable energy on the water, the WattCycle 12V 628Ah Ultra lithium battery ensures dependable performance for today’s most demanding applications.

Tech Specifications

General

Battery Technology	LiFePO4
Dimensions	L480 x W362 x H242 mm
Weight	59,81 kg
Terminals	M8 Bolts
Casing Material	Cold Rolled Steel
Waterproof Rating	IP65
Self-heating	No
Hazard class	9
Warranty	5 Years
Certifications	IEC, CE-EMC, CE-RoHS, CE-Battery, FCC-SDOC, UN38.3, MSDS

Technical Data

Nominal Voltage	12,8V
Nominal/Usable Capacity	628Ah
Energy	8038Wh
Cell Balancing	No, passive balancing
Monthly Self Discharge	≤3%/Month
Series & Parallel Configurations	Max. 4 in Parallel, Max. 4 in Series

BMS

BMS	300A
Max. Continuous Output Power	3840W
Overall Over-Charge Detection Voltage	14,4±0,2V
Overall Over-Discharge Detection Voltage	10±0,2V
Standard Continuous Charge Current	125,6A (0.2C)
Max. Continuous Charge/Discharge Current	300A (1C)
Over-current Charge Protection	310A±10A
Over-current Discharge Protection	310A±10A
BMS High Temperature Cut-Off	Charge: 55℃±5℃ Discharge: 65℃±5℃
BMS Low Temperature Cut-Off	Charge: 0℃±5℃ Discharge: - 20℃±5℃
High Temperature Recovery	Charge: 50℃±5℃ Discharge: 60℃±5℃
Low Temperature Recovery	Charge: 2℃±5℃ Discharge: -15℃±5℃

Temperature Range

Charging Temperature	0℃-55℃
Discharging Temperature	-20℃-60℃
Storage Temperature	0℃-45℃

Frequently Asked Questions

Yes! LiFePO4 batteries are among the most stable lithium batteries on the market. WattCycle LiFePO4 batteries use high-quality Grade-A LiFePO4 cells and are equipped with an integrated battery management system (BMS) that provides protection against overload, overvoltage, extreme temperatures (including deep discharge protection), and much more. All WattCycle batteries undergo rigorous testing before shipment and have certifications such as CE, RoHS, and UN38.3. Buy with confidence now!

The battery measures 480 × 362 × 242 mm (L × W × H), making it more compact than many LiFePO4 batteries with capacities above 300Ah currently on the market. It weighs 59.81 kg, so two adults are recommended for handling and transport. It is ideal for installation in home energy storage systems, fixed power setups in motorhomes, and battery compartments on sailing boats.

A LiFePO4 12V 628Ah Ultra lithium battery has a total usable energy of 8.038 Wh, calculated by multiplying the voltage (12.8 V) by the ampere-hours (628 Ah).

The LiFePO4 12V 628Ah Ultra lithium battery is equipped with Bluetooth 5.0. Using the WattCycle app, you can monitor the following data (for reference only; actual data may vary depending on the app version): status, temperature, voltage, current, and individual cell voltages.You can also control the charging and discharging processes directly via the app.If you prefer not to install an app, you can alternatively use a 500A battery monitor to track the battery status.

The operating time of the battery depends on several factors, including battery capacity, connected load, and battery condition. For example, a new battery performs better than a used one, as capacity gradually decreases slightly over the number of charge cycles.However, the runtime can be estimated using a simple formula:

Battery runtime (hours) = Battery capacity (Wh) / Total device power consumption (W)

For example, if you use a 12V 628Ah Ultra LiFePO4 lithium battery and connect a 50W lamp and a 50W speaker, the battery runtime would be:

8,038.4 Wh / (50 W + 50 W) = 80.38 hours

This simple calculation helps you estimate runtime under different load conditions.

It is not recommended. However, if no suitable LiFePO4 charger is available temporarily, a standard charger may be used for charging.

WattCycle recommends using a 12V 125A LiFePO4 charger for optimal performance and battery life.

The charging time depends on the specifications of your PV system, including the size of your solar panels and the capacity of your solar charge controller.

For example, if the 12V 628Ah Ultra LiFePO4 battery covers your daily energy consumption and you have around 4.5 hours of effective sunlight per day, you would need to generate approximately 8,038.4 Wh of energy.To achieve this, you would require at least 1,786.31 W of solar panels, so a 2,000 W system is recommended. This could consist of four 500 W panels or five 400 W panels.For a 2,000 W PV system, the required charging current is approximately 167 A. However, most MPPT solar charge controllers available on the market are typically rated at around 100 A, so it is recommended to use two 100 A MPPT controllers.

Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore All WattCycle LiFePO4 12V lithium batteries support different configurations, including series, parallel, and series-parallel connections. You can connect up to 4 batteries in parallel and 4 in series, meaning a total of 16 units of the 12V 628Ah Ultra LiFePO4 battery can be combined to achieve an energy storage capacity of up to 128.61 kWh.

It is important to always use identical battery models with the same voltage, and ensure that batteries are not older than 6 months when combining them in a system.magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Two 12V 314Ah Mini LiFePO4 batteries connected in parallel and one 12V 628Ah Ultra LiFePO4 battery provide the same total capacity. However, using a single battery system generally offers better consistency and more stable operation. In addition, it requires less wiring and takes up less installation space.

Not recommended. There are four key rules for connecting WattCycle batteries in series or parallel:

Same brand
Same voltage
Same capacity (Ah rating)
Manufacturing/purchase date not older than 6 months

Mixing different models may lead to imbalance and affect system performance and safety.

Customers praised this 12V 628Ah lithium battery for its "excellent build quality" and robust metal frame protecting cells. The Bluetooth app works well, charging/discharging operates normally, and cell voltages are well-balanced. Outstanding customer support resolves shipping issues promptly. Minor concerns: Bluetooth connector is short, BMS could be larger, charging stops at 97%.

5 stars: 6 (86%)
4 stars: 1 (14%)
3 stars: 0 (0%)
2 stars: 0 (0%)
1 star: 0 (0%)

1 Pack (8.03 kWh) / With ECE R10 Version

Excellent battery quality and outstanding customer support

I purchased a WattCycle 12V 628Ah battery for my motorhome. Although the battery arrived with some damage caused during shipping, my overall experience with WattCycle has been very positive.

From the very beginning, their customer support responded quickly, kept me informed throughout the process, and provided a satisfactory solution. What I appreciated most was that they focused on making sure the battery itself was in perfect working condition rather than simply dismissing the issue.

They explicitly authorized me to open the battery to verify that there was no internal damage and confirmed that doing so would not affect the warranty. They also assured me that the external damage caused during shipping would not compromise the warranty coverage if I ever needed to make a warranty claim in the future.

After opening the battery, I confirmed that the impact had not affected any of the cells. I was genuinely impressed by the excellent build quality. The cells are protected by a very robust metal frame and are positioned well away from the outer casing, providing a level of protection that is noticeably better than in many other LiFePO₄ batteries I have seen.

After completing the inspection, I tested the battery and everything worked perfectly. Charging and discharging operate normally, and the cell voltages are exceptionally well balanced.

Overall, I received not only a battery that inspires confidence because of its outstanding construction, but also excellent after-sales support. It is reassuring to know that, if something goes wrong, the company stands behind its products. Based on my experience, I would definitely buy from WattCycle again.