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Model
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 Mini Bluetooth View Product › |
 Self-heating View Product › |
 Mini Super View Product › |
 Underseat View Product › |
|---|---|---|---|---|
| Ideal for | Camping with App monitoring | Winter camping in cold regions | High-end off-grid & maximum lifespan | Designed for seat base in caravans |
| Price | € 539,99 | € 549,99 | € 549,99 | € 659,99 |
| Bluetooth (App) | ✔ Yes | ✔ Yes | ✔ Yes | ✔ Yes |
| Heating function | — | ✔ Yes (Below 0°C) | — | ✔ Yes (Below 0°C) |
| Cell Balancer | Passive Balancer | Passive Balancer | ⭐ Active Balancer | Passive Balancer |
| Dimensions (LxWxH) | 384 x 194 x 248 mm | 383 x 194 x 250 mm | 387 x 207 x 273 mm | 320 x 290 x 190 mm |
| Certifications | ECE R10 | ECE R10 | ECE R10 | ECE R10 |
| Under-seat installation | ✔ Optimal | ✔ Optimal | ⚠ Check first | ✔ Optimal |
| Installation position | Upright, horizontal & sideways | Upright, horizontal & sideways | Upright, horizontal & sideways | Upright |
| Removable handles | Yes | Yes | Yes | Yes |
| Max. charge current | 62,8A/200A | 62,8A/200A | 62,8A/200A | 62,8A/250A |
| Max. continuous discharge current |
200A | 200A | 200A | 250A |
| Peak discharge current | 210A±10A | 210A±10A | 220A±10A | 260A±40A |
| Weight | 27 kg | 27,95 kg | 27,23 kg | 30,75 kg |
If you need dependable power in low-temperature environments like Finland, Sweden, or Denmark, the best choice depends on your application.
The WattCycle 12V 314Ah Super Battery is the best option if you want easy access to the battery's internal components. Its top cover is secured with screws, allowing you to remove the cover easily for inspection or maintenance. This user-friendly design lets you check the condition of the cells and internal components without damaging the enclosure, making it an excellent choice for DIY enthusiasts and experienced users.
For maximum long-term performance, choose the WattCycle 12V 314Ah Super Battery. It features a 3A active balancer, which continuously balances voltage differences between individual cells. This helps preserve more usable capacity, supports faster and more complete charging without premature cut-off, and slows long-term capacity degradation. The result is more consistent performance, improved battery efficiency, and a longer service life compared with batteries that use passive balancing alone.
The WattCycle 12V 314Ah Underseat Battery is specifically designed for campervan installations. Measuring 320 × 290 × 190 mm, it fits neatly under the driver's seat in many popular European campervans, helping you maximize valuable interior space.
With 4,019Wh of usable energy, it can typically power a campervan electrical system for 2–3 days, depending on energy consumption. It is also compatible with 3,000W–3,500W inverters, making it an excellent choice for running high-power appliances while providing reliable power throughout the year, including in winter conditions.
If you're looking for the best-value LiFePO4 battery without paying extra for premium features, the WattCycle 12V 314Ah Mini Bluetooth Battery is an excellent choice. As the original model in our popular 12V 314Ah Mini Series, it has become one of WattCycle's flagship products thanks to its proven reliability, Bluetooth monitoring, and outstanding price-to-performance ratio. It's the ideal option for users who simply want a dependable, high-capacity lithium leisure battery at a competitive price.
European winters can be unforgiving, but your power supply doesn't have to suffer. Every model in our 12V 314Ah LiFePO4 battery series is equipped with a smart BMS featuring comprehensive low-temperature cut-offs.
Charging automatically stops if the temperature drops below 0℃ to prevent permanent cell damage.
Discharging temporarily pauses at temperatures below -20℃ to shield the chemistry, resuming seamlessly once safe operating temperatures are restored.
Installing a battery under a caravan seat base usually makes physical inspections a massive chore. With our integrated Bluetooth, you never have to disassemble your energy system to check.
Except for real-time data like SoC, voltage, current, cell temperatures, and remaining battery capacity, you can also protect your battery with password protection. By binding your account and your battery, you can rest assured that strangers will not operate your battery.
Need to power a heavy-duty workshop, a large yacht, or a residential backup system? Our 12V 314Ah LiFePO4 battery is engineered for flexible system expansion, supporting up to a 4P4S (4 Parallel, 4 Series) configuration.
16 pcs of 12V 314Ah LiFePO4 batteries can build a massive 48V 1256Ah bank, providing an incredible 64.31kWh energy, capable of running high-voltage off-grid residential setups or heavy-duty marine electrical networks with ease.
For those who brave the Alps or Nordic winters, our specialized self-heating models ensure you never lose charging capability.
Built-in thermal heating pads automatically activate when the ambient temperature drops below 5℃ and a charging current is applied. By warming the cells up to safe operational temperatures, the system ensures your battery charges continuously without pausing, guaranteeing worry-free energy in the coldest environments.
Cell imbalance is the silent killer of large-capacity battery packs. The 12V 314Ah Mini Super stands out with premium Active Balancing technology for a longer lifespan and maximum capacity.
The active balance minimizes cell-to-cell voltage variance, ensuring your battery pack operates at peak efficiency, extracts every single Ah of capacity, and lasts significantly longer over years of deep cycling.
WattCycle 12V 314Ah Mini Bluetooth Battery can be placed sideways. Its dimensions of L384 x W194 x H248 mm are extremely suitable for the narrow space of the motorhome yet provide much more usable energy.
Whether you’re preparing a powerful energy system in your campervan, storing energy for your boat on open waters, or setting up an outdoor portable power station, this battery offers complete flexibility in installation.
It can be safely mounted upright, sideways, or flat, ensuring stable performance and reliable power delivery in any position. No matter the environment, it adapts perfectly to your space and keeps your energy flowing without compromise.
We launched a 12V 314Ah version which is specially designed for European campervans.
The 12V 314Ah H190 Underseat is a direct drop-in battery.
Standing at a slim height of just 190mm, the 12V 314Ah Underseat model is custom-engineered to drop straight into the tight, upright seat base compartments of mainstream European vans (such as Fiat Ducato, Peugeot Boxer, and Citroën Jumper) without any modifications.
| Battery Technology | LiFePO4 |
| Terminals | M8 Bolts |
| Waterproof Rating | IP65 |
| Hazard class | 9 |
| Warranty | 5 Years |
| Nominal Voltage | 12,8V |
| Nominal/Usable Capacity | 314Ah |
| Energy | 4019Wh |
| Bluetooth | Yes, Bluetooth 5.0 |
| Monthly Self Discharge | ≤3%/Month |
| Series & Parallel Configurations | Max. 4 in Parallel, Max. 4 in Series |
| Overall Over-Charge Detection Voltage | 14,4±0,2V |
| Overall Over-Discharge Detection Voltage | 10±0,2V |
| Standard Continuous Charge Current | 62.8A (0.2C) |
| 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℃ |
| Charging Temperature | 0℃-55℃ |
| Discharging Temperature | -20℃-60℃ |
| Storage Temperature | 0℃-45℃ |
Yes. Our 200 A BMS protects against charging or discharging in unsafe temperatures.
We recommend using a WattCycle LiFePO4 battery charger, which is specifically designed to meet the unique charging needs of LiFePO4 batteries. Alternatively, you can also charge the battery using photovoltaic solar panels through MPPT or use an inverter with a built-in AC to DC charging function.
Absolutely. LiFePO4 is the most stable lithium chemistry on the market. WattCycle cells are UL-certified and housed in an IP65-rated case. Our internal BMS guards against:
Yes—our 12V 314Ah LiFePO4 Battery is designed for seamless solar charging. Simply pair it with an MPPT charge controller and a 1.200W PV array to top up in one sunny day (≈4.5 hrs of peak sun).
Optimal Setup: A 1.200W solar panel bank feeding an MPPT regulator ensures efficient charging of your 12V 314Ah solar battery.
Charge Profile: MPPT controllers adjust voltage/current to maintain the ideal 14,2V – 14,6V range, protecting cell health and maximizing cycle life.
Scalable: Whether you’re building out 12V 314Ah batteries for solar panels in parallel or keeping it simple with one pack, the WattCycle system adapts—no special wiring or firmware tweaks required.
1. Recommended Storage Conditions
2. Recommended Charge Level During Storage
LiFePO4 batteries should be stored at a partial state of charge (SOC) between 50% and 80%.
Why Avoid Full Charge/Discharge?
Additional Tips:
Zero maintenance—no watering or equalizing. Just install, register your 7-year warranty, and enjoy consistent, long-lasting power for years to come.
Estoy contento con la batería tiene unas medidas muy compactas la aplicación del teléfono funciona muy bien y de momento la batería funciona genial. No sé qué pasará en el futuro
Installed a 314 in my slide in camper with a 2000w xantrex inverter, runs the microwave at 1500w and the AC on low at 4-500w. The bms bt interface is really useful. I choose this model because it was high on Will Prowess’s reviews.
My camper van is small, but my power needs are huge, so this 314Ah Mini is a blessing. It’s compact enough that I still have room for my actual gear, not just batteries. Delivery was fast—faster than I could finish my coffee. The Bluetooth app works great, which means my new favorite hobby is checking the battery status every time I blink. Solid build, high efficiency, and no headaches so far. Highly recommend if you want real power without losing your living space!
Good batteries, now will se what happening in time.
De perfecte boot accu voor schip van 10 meter.
Ook in de winter als de zonnecollectoren weinig leveren en koud weer is. Is de verwarming in de accu perfecte keuze. De 12V hetelucht verwarming doet het perfect op de accu.
Wat een uitvinding, super Watt cyclus.
Per ora do 4 stelle perché non l'ho ancora installata ne provata, ho solo collegata con Bluetooth e il tutto sembra funzionare benissimo ed è carica al 66%. penso comunque che sarà un buon prodotto.
Dalle recensioni che ho letto è visto, penso che sia uno dei migliori prodotti come qualità prezzo.
Posso solo dire per adesso che sia l'ordine che il trasporto (consegna veloce e perfetta come da foto) tutto ok 5 stelle.
una sola cosa ho visto che non ha, "il bilanciamento delle celle attivo ma passivo. Questa è una pecca, spero che le prossime avranno il bilanciamento attivo delle celle. Per adesso grazie.
Getting ready for the life in the wild. Everything working and looks great for now! App shows the state of the batteries and voltage for each battery cell.
Bin sehr zufrieden mit dem Produkt hält was es verspricht
Gerne wieder.
Great value for money. The size is perfect under the sofa in the van.
spokojen
The battery is excellent. The courier damaged my battery during delivery. I praise "Wattcycle" for the communication and fast delivery of the new battery.
so far so good!! Looking good en delivery was quickly
Die Batterien kamen in gutem Zustand und gut verpackt an. Lieferung inklusive kurzen und längeren Schrauben. Sehr hilfreich. Ich habe 4 davon als Hauptversorgung für die Wohnraumbatterien im Boot installiert. Sie ersetzen jeweils 4 AGM-Batterien mit 210Ah, die um die Hälfte größer und doppelt so schwer waren (je 120 Pfund) wie diese ~60 Pfund schweren 314Ah LiFePO4 Batterien. Dadurch verdreifachte sich meine Kapazität und ich sparte 240 Pfund Gewicht. Ich habe an jede Plus-Batterie 250A MRBF-Sicherungen sowie eine 350A Klasse T-Sicherung auf der gesamten DC Plus Seite angebracht. Zusätzlich installierte ich einen wasserdichten Victron 500A SmartShunt zur Überwachung von Lade-/Entladeständen. Für die Ladung ergänzte ich einen Victron Orion XS 50A-DC/DC-Ladegerät für die Lichtmaschine sowie ein 40A LiFePO4 AC/DC-Ladegerät mit ferngesteuertem Stecker. Bisher scheinen die Batterien wie angegeben zu funktionieren.
Buona batteria, 280 Ah smart mini.Per la su capacità ,gode di dimensioni super compatte. Si riesce a montare di fianco ( ho chiesto al suporto tehnico l'approvazione)
sotto il sedile del camper su base Ford Transit ,e credo anche Fiat Ducato.
The battery seems to be very good. Nice build quality, incredible capacity!
The BT is really disapointing. Just had an app-update. The app gives very little information. Just voltage, percentage of capacity, temperature. No information about the seperate cells. No possibility to change the settings of the BMS.
No worth the extra money spent on the Bluetooth module.
VERY IMPRESSED so far! I ordered 2 of the NEW 300 amp hour MINI lithium batteries, and they are working perfectly. I ordered them Friday, October 18th, 2024 and received them both on October 25, 2024 in perfect working order. I started off by testing 1 quickly then placing it in a freezer set to 26 degrees Fahrenheit to test the low temperature charging protection, left it in for about 12 hours and hooked to a charger and it would not allow a charge to pass! I allowed it to warm up slowing and then tested again and it then would allow charging again. Very happy to see this feature working! Being able to use my system in freezing conditions is very important to me and this helps to know my investment in these batteries will be protected!
The second battery I began charging up off my 1000 watts of solar panels and Victron charge controllers I have in/on my fully converted cargo trailer camper. I use it as an "off-grid baby camper" as I call it. We use the camper (I built in spring 2020) for family trips, camp outs, cross country road trips, and "deer camp" where we expect it to deliver all the comforts of home in a small package while going wherever we want. We depend on the solar and lithium batteries along with chargers and inverter to keep the food in the fridge cold, my family and pets cool in the air conditioning in the heat of summertime, electric heaters and diesel heaters keeping us warm in the winter. Along with being able to run a coffee maker in the morning or making microwave popcorn for watching a movie on the TV before bed.... all while being able to camp anywhere we want without the concern of pluging in at a campsite or having to listen to a noisy and stinky generator. So far the available power in these batteries compared to my previous lithium battery bank I can instantly tell these batteries will be a major upgrade to my system.
My previous system consisted of 465 amp hours of lithium-ion in 3 parallel batteries. Connected in my system with a 12v Giandel 2200/4000 watt inverter it powered all our needs but I noticed a slight delay in developing power on some higher demanding appliances. With my limited time with these new Wattcycle 300ah Mini's, I've so far hooked up some power tools in my garage and a microwave in my trailer and they all have preformed like they were plugged into a regular outlet in my house. That's with only 1 battery hooked up! I've already been so impressed I've purchased a third to make my system 900ah!
The compact size of these 300ah Mini's is remarkable! Each of them is about the size of my previous 160ah lithium-ion batteries. I am going to be able to double my total power in the same space. They do weigh more (about 57 pounds each) than my previous batteries, but that is to be expected with their higher density..... or whatever they've done to pack so much power into such a small battery.
Works like a charm!
Super
