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![[đChristmas Deal] 12V 628Ah Bluetooth LiFePO4 Battery | 300A BMS | 8038Wh](http://ca.wattcycle.com/cdn/shop/files/WattCycle-12V-628Ah-Ultra-LithiumBattery-with-Bluetooth-8038Wh.webp?v=1765355321)
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![[đChristmas Deal] 12V 628Ah Bluetooth LiFePO4 Battery | 300A BMS | 8038Wh](http://ca.wattcycle.com/cdn/shop/files/WattCycle-12V-628Ah-Ultra-LithiumBattery-with-Bluetooth-Monitor.webp?v=1765355321)
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![[đChristmas Deal] 12V 628Ah Bluetooth LiFePO4 Battery | 300A BMS | 8038Wh](http://ca.wattcycle.com/cdn/shop/files/WattCycle-12V-628Ah-Ultra-LithiumBattery-with-Bluetooth-Applications.webp?v=1765355321)
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![[đChristmas Deal] 12V 628Ah Bluetooth LiFePO4 Battery | 300A BMS | 8038Wh](http://ca.wattcycle.com/cdn/shop/files/WattCycle-12V-628Ah-Ultra-LithiumBattery-with-Bluetooth-Dimensiosn_600x.webp?v=1765355321)
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[đChristmas Deal] 12V 628Ah Bluetooth LiFePO4 Battery | 300A BMS | 8038Wh
Expected Delivery on - .
IEC/CE-EMC/CE-ROHS/CE-Battery/FCC-SDOC/UD38.3/MSDS
âĄCompact Design: 18.9 X 14.25 X 9.53 inch | 153.99 lbs
âĄMassive Capacity: 628Ah (12.8V) | ~8kWh energy storage in a single unit.
âĄ3X weight energy density of lead-acid batteries making it suitable for scenarios that require lightweighting (such as RVs and ships).
âĄUltra-Long Cycle Life: 6,000+ cycles at 80% depth of discharge (DoD)âoutperforming standard LiFePO4 batteries.
âĄHigh Power Output: Continuous 300A discharge (3,840W) for heavy-duty inverters and equipment.
âĄSmart Bluetooth Monitoring: Track real-time voltage, state of charge (SoC), temperature, and health via WattCycle app.
âĄRobust 300A BMS with 8X Protections: Over-current, short-circuit, and thermal safeguards.
âĄLow/high-temperature cutoffs (charge: -5°C/23°F to 60°C/140°F; discharge: -25°C/-13°F to 75°C/167°F).
âĄScalable Design: Supports up to 4-series (51.2V) and 4-parallel (2,512Ah) configurations with 128.61kWh usable energy.
âĄMilitary-Grade Build: UL94 V-0 fire-resistant ABS+PC casing and corrosion-resistant M8 terminals.
Free Shipping & Return
Money back guarantee
Fast & reliable support
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[đChristmas Deal] 12V 628Ah Bluetooth LiFePO4 Battery | 300A BMS | 8038Wh
Features
Unmatched Power and Durability for Demanding Applications
Engineered for high-performance energy storage, the WattCycle 12V 628Ah LiFePO4 Lithium Battery redefines reliability and longevity. Built with advanced lithium iron phosphate (LiFePO4) technology, this powerhouse delivers exceptional cycle life, safety, and scalabilityâperfect for off-grid solar systems, RVs, marine use, and commercial backup power solutions.
- Massive 8.04kWh Storage: Perfect for energy-intensive applications (RVs, solar systems, marine).
- High-Discharge Capability: Delivers 300A continuous current (3,840W), powering heavy loads like inverters and industrial equipment.
- 3x Lighter Than Lead-Acid: At 115.1 Wh/kg, reduces installation effort and boosts mobility for RVs/boats.
- Zero Maintenance & 100% Recyclable: No toxic chemicals, aligning with sustainable energy goals.
- 6,000+ Cycles at 80% Depth of Discharge: Outlasts standard LiFePO4 batteries by 2â3x, ensuring decades of reliable service.
- Low Self-Discharge (<3%/Month): Retains charge during seasonal storage, ideal for part-time RVers or backup systems.
- Wide Temperature Range: Operates safely from -25°C to 75°C (-13°F to 167°F), even in harsh environments.
- Bluetooth Monitoring: Track real-time battery health (voltage, SoC, temperature) via mobile app (confirm functionality with manufacturer).
- Plug-and-Play Expansion: Supports 4-series (51.2V) or 4-parallel (2,512Ah) setups for custom energy solutions.
- Lower Lifetime Cost: 6,000-cycle lifespan slashes replacement expenses vs. lead-acid or cheaper lithium options.
- Versatile Applications: Ideal for off-grid homes, commercial backup, telecom, agriculture, and adventure vehicles.
Tech Specs
| Dimensions | 18.9 x 14.25 x 9.53 in | 480 X 362 X 242 mm |
| Weight | 153.99 lbs | 69.85 kg |
| Standard/Maximum Continuous Charging | 125.6A/300A |
| Maximum Continuous Discharging | 300A |
| Over-current Discharge Protection | 310A±10A |
| Over-current Charge Protection | 310A±10A |
| Primary Protection Current Value | 500A@20s |
| Secondary Protection Current Value | 1000A@5s |
| Short-Circuir Current Protection | Support |
| Release Condition | Cut Load |
| Charging High Temperature Protection | 140°F~158°F / 60°C~70°C |
| Discharge High Temperature Protection | 149°F~167°F / 65°C~75°C |
| High Temperature Protection Release Condition | Drop by 41°F~59°F / 5°C~15°C |
| Charging Low Temperature Protection | 23°F~41°F / -5°C~5°C |
| Discharge Low Temperature Protection | -13°F~5°F / -25°C~-15°C |
| Low Temperature Protection Release Condition | Rise by 41°F~59°F / 5°C~15°C |
| Rated Voltage | 12.8V |
| Standard Charging Voltage | 14.6V±0.2V |
| Shipping Charging Voltage | 12.8V~13.5V |
| Shipping Capacity | 50% |
| Cycle Life | 6000@80%DOD |
| Self Discharge Rate | <3%/Month |
| Series & Parallel Connections | 4 Parrallel(Max) 4 Series(Max) |
| Communications | Not Supported |
| Case Material | ABS+PC/UL94 V-0 |
| Storage Temperature | 32°F~140°F/0°C~60°C |
| Terminal Bolt Size | M8 |
Youtube Reviews
Reviews
Customer Reviews
It has been in operation now for 6 days.
We are happy with this product.
We are suppliers and installers of off-grid solar systems and Wattcycle is now on our supplier list.
We just bought a second battery!
User Manual
WattCycle 12V 628Ah Ultra Deep Cycle Lithium Battery
Experience industry-leading energy density with the WattCycle 12V 628Ah Ultra Lithium Battery, engineered to deliver exceptional performance and reliability. Incorporating EV-grade A+ cells, a robust 300 A BMS with configurable over-current protection, and expandable 4 P Ă 4 S scalability for up to 128.61 kWh, this 12V 628Ah Ultra Lithium Battery sets a new benchmark in power storage.
Broad Application Spectrum
The WattCycle 12VâŻ628Ah lithium battery excels in a wide range of settingsâfrom reliable home energy storage and remote offâgrid microgrids to demanding marine environments and longâhaul recreational vehicles. In critical infrastructure such as UPS backup systems and telecommunications sites, its consistent output and intelligent protection features minimize downtime and maintenance. Whether youâre powering a vacation cabin, outfitting a commercial solar array, or ensuring uninterrupted operation aboard a vessel, the 12VâŻ628Ah Ultra Lithium Battery delivers the robust performance and dependability that modern applications require.
Advanced Wireless Control
Equipped with Bluetooth 5.0, the WattCycle APP transforms your smartphone into a command center for the 12V 628Ah lithium battery. With a few taps, you can remotely initiate or suspend discharge, verify system health, and monitor critical metricsâvoltage, current draw, and cell temperatureâin real time. Parameters such as the 300 A continuous discharge limit and peak over-current cutoff can be fine-tuned on the fly, ensuring your WattCycle 12V 628Ah LiFePO4 battery operates precisely to your requirements.
Extreme-Environment Protection
Built to withstand the harshest conditions, the WattCycle 12V 628Ah Ultra lithium battery employs intelligent thermal safeguards that automatically pause charging below 32 °F (0 °C) and only resume once ambient temperatures exceed 41 °F (5 °C). In even more severe cold, discharge is halted below â4 °F (â20 °C) to prevent cell damage. Once the environment returns to safe thresholds, the system seamlessly restores full functionalityâensuring your 12V 628Ah Ultra Lithium Battery delivers uninterrupted power whether youâre braving sub-zero winters or scorching summer heat.
Decade-Long Backup Endurance
EV grade A+ LiFePO4 calls have a longer lifespan, better-refined manufacturing, and contain more energy per cell. Engineered for unwavering reliability, the WattCycle 12V 628Ah lithium battery delivers over a decade of continuous backup power, ensuring mission-critical systems stay online through countless cycles. This exceptional longevity means your investment in the 12V 628Ah Ultra Lithium Battery pays dividends year after year, with minimal capacity fade and maximum uptime for residential, commercial, and industrial applications.
Superior Performance vs. LeadâAcid
Unlike conventional leadâacid designs, the WattCycle 12VâŻ628Ah Ultra Lithium Battery is encased in UL94 Vâ0 flameâresistant ABS+PC housing and carries an IP65 ingress rating, delivering industryâleading fire safety and protection against dust and water. This rugged enclosure means you can install it in harsh industrial settings, dusty warehouses, or aboard marine vessels with confidenceâenvironments where traditional batteries often fail or require frequent maintenance. Coupled with the inherent maintenanceâfree LiFePO4 chemistry, which eliminates watering and minimizes selfâdischarge, this robust design lowers your total cost of ownership and guarantees reliable power delivery when you need it most.
Modular High-Capacity Configuration
Each WattCycle 12V 628Ah Ultra LiFePO4 battery stacked individual battery delivers 8038.4Wh of energy. For projects demanding even greater power, 16 batteries in 4P4S can create a 51.2V 2512Ah system that unleashes a colossal 128.61 kWh of energy. With a truly gigantic energy capacity, this system easily supports any energy demands. Whether youâre expanding a commercial backup system or building a residential microgrid, the 12V 628Ah Ultra Lithium Battery adapts without compromising reliability or performance.
Versatile Fast-Charge Options
Use the WattCycle 14.6âŻV 80âŻA charger specifically designed for LiFePO4 battery, which fully charges the battery in just 7.85âŻhours. With a faster charging rate than traditional lead-acid batteries it provides a better using experience. In addition, 3 other charging options, including solar panel,  alternator and generator, suit your different charging needs.
Let customers speak for us
It has been in operation now for 6 days.
We are happy with this product.
We are suppliers and installers of off-grid solar systems and Wattcycle is now on our supplier list.
We just bought a second battery!
New to Li and solar controllers. 67yo retired tradesman so not afraid of installations as a whole. The app was painless to work with for me. Installed in an aluminum truck tool box and at 25' away I have Bluetooth connectivity. So far no problems with cell balances. I will consider buying a second.
Still waiting to try it out all charged and the app hooked up seamlessly. Like the weight much lighter than a comparable lead acid battery
âââââ Reliable Power and Smart Monitoring â Perfect for Trolling Motors!
I've been using the Wattcycle 12V 100Ah TM Battery with Bluetooth on my trolling motor setup, and it's been an outstanding upgrade. The power delivery is consistent, even during long days on the water. No unexpected drop-offs or performance issuesâjust solid, reliable output.
The built-in Bluetooth monitoring is a huge plus. I love being able to check the battery's status right from my phoneâvoltage, temperature, state of charge, and more. It gives me full confidence while out fishing, knowing exactly how much battery I have left at all times.
The battery is lightweight, charges fast, and feels built to last. Itâs clear Wattcycle put serious thought into both performance and convenience.
Highly recommended for anyone needing a dependable and smart battery for trolling motors!
Purchased 2 314AH smart mini so far so good. Did a 150Amp draw down to 58% SOC after 3 hours, ran out of time to take it longer, this test exceeded expectations. Look forward to testing it when traveling next week.
I purchased this battery primarily to replace the heavy 100A.Hr deep cycle lead acid battery that I use for my trolling motor, and secondly as an increase of capacity to my 2000 watt "solar generator" (portable back up power supply).
I did a brief test with the battery in both applications and it performed exactly as expected. On the surface it appears to be sturdy, attractive and well made. The weight makes it easy to move and so far, I am very satisfied with my purchase. My only regret is not spending a few dollars more on the unit with bluetooth communication.
Just got my order of 2-100amp batteries to power my 24v 78 lbs thrust outboard. Can't wait to get on the water. Bluetooth works greatand the reason I chose these.
I'm happy that your batteries are now available in Canada. Wattcycle is the ones I wanted after looking for quality at a good price. I made a short video on YouTube showing off my new batteries. I want to buy 2 more 100ah batteries in the near future to complete my little portable power station. I'll be making a video about that also. Thanks for putting out a good product.
Bill Prowse is the best source on Youtube when it comes to analyzing anything to do with Lithium batteries, not to mention solar power systems. His review of the Watt Cycle 12 volt LiFePo4 battery was strongly positive. I've been using it now for a few weeks and feel confident that it was a great purchase and it should provide years of reliable service.
I needed to upgrade from my heavy and low capacity Lead Acid RV batteries.
After some YouTube research and on-line shopping, I came to the conclusion the WattCycle Group 24 100 AH battery was the best combination of performance, user ratings and price. For me this is a very good value.
A small customer service issue was dealt with and resolved quickly. The batteries were shipped quickly. Thank you.
I finally made the move to LiFePO4 batteries in my RV. The original Lead Acid worked but were lacking in usable capacity, and were heavy.
After a bit of YouTube research and on-line shopping, I chose the WattCycle. It's a very good battery, with very good on-line reviews, good tested performance and overall for me results in a battery with very good value.
With this kind of investment I knew the best thing would be a LiFePO4 specific charger. This one was made by WattCycle specific for the Batteries I bought. With a package deal (with the Batteries I brought) the pricing was perfect. It charged the batteries quickly and was relatively quiet.
Shipping was fast. Thank you.
