When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
12V 300Ah BatteryMassive 3840Wh Capacity & 300Ah Deep Cycle
Replace three bulky Group 24 batteries with one 12V 300Ah unit. Delivers 3840Wh of stable energy for RVs, solar systems, fishing, and off-grid applications, ensuring longer runtime for your devices.Exceptional Longevity: 6,000+ Deep Cycles at 100% DOD
Built with Grade A+ LiFePO4 cells, this battery provides over 6,000 cycles at full 100% Depth of Discharge – outlasting 10x more than traditional lead-acid batteries (which last only 500 cycles at 50% DOD), saving you replacement costs for years.Lightweight & Compact Design – 68% Lighter
Weighing only 63.05 lbs, it is 68% lighter and 26% smaller than 3x Group 24 batteries combined. Easy to lift, install, and fits into tight RV or boat compartments without complex wiring.All-Weather Reliability with Wide Temperature Range
Perform consistently in extreme conditions: charge from 14°F to 131°F (-10°C to 55°C) and discharge from -4°F to 140°F (-20°C to 60°C). Ideal for year-round adventures in any climate.Advanced 200A Smart BMS for Complete Protection
Built-in 200A continuous (300A max) Battery Management System provides 6-layer protection: Over-Voltage, Over-Load, Over-Discharge, Over-Charge, Over-Current, and High/Low-Temperature cut-off, ensuring both battery and connected devices stay safe.12V 314Ah Mini BatteryBuilt-in 200A BMS – Safe & Maintenance-Free: The advanced Battery Management System (BMS) offers overcharge, over-discharge, overcurrent, and short-circuit protection, ensuring long-term safety and stability. A high-temperature cut-off prevents charging above 158°F (70°C), making it safer than lead-acid alternatives. Perfect for both indoor and outdoor applications.4.19kWh & 15,000+ Deep Cycles: Our 12.8V 314Ah LiFePO4 battery offers an impressive 15,000+ deep cycles, lasting 30 times longer than traditional lead-acid batteries. Fully charged, the LiFePO4 battery delivers 4.19kWh of energy with nearly 100% depth of discharge (DOD), ensuring reliable power for your devices.Lighter & More Compact: Thanks to its high energy density, this battery provides double the usable capacity of lead-acid batteries while being 40% lighter. Weighing only 61.73 lbs and measuring 15.04×6.93×7.36 inches, it saves valuable space without compromising power.Up to 64.3kWh Expandable Energy Storage: Supports 4S4P configurations, enabling up to 51.2V 1256Ah and a massive 63.48kWh energy system. Ideal for home solar storage, emergency backup, RVs, and marine travel, this expandable power solution meets high-energy demands effortlessly.Low-Temperature Cut-Off for Protection: The integrated BMS automatically cuts off charging in low-temperature conditions, preventing irreversible battery damage and ensuring longevity in extreme climates.Wide Applications: Perfect for home energy storage, UPS backup, RVs, campers, golf carts, trolling motors, houseboats, solar systems, digital/CCTV cameras, DIY projects, and more. A versatile solution for both recreational and professional use.12V 314Ah Mini Bluetooth BatteryHigh Capacity & Long Cycle Life
Delivers 4.01–4.19 kWh of energy, outperforming three 100Ah lithium batteries in parallel. Offers over 15,000 cycles at 60% DOD—30 times longer than lead-acid batteries.Scalable Energy Storage (Up to 64.3 kWh)
Supports 4S4P configuration, allowing expansion to 51.2V / 1256Ah (64.3 kWh). Ideal for large solar systems, home backup, and marine applications with heavy-duty power demands.Advanced BMS with Full Protection
Built-in 200A Battery Management System provides stable output, with low-temperature cut-off (below freezing), high-temperature cut-off (above 158°F / 70°C), and overcurrent protection for enhanced safety and extended battery life.Bluetooth 5.0 Smart Monitoring
Real-time tracking via the HumsiENK App (iOS/Android) for voltage, current, capacity, and temperature. Enables remote monitoring within a 15-meter range for easy management.Lightweight, Compact & Durable Design
Weighs only 59.5 lbs—40% lighter than lead-acid—with a compact size (15.1 × 9.7 × 7.6 inches). Features a full-aluminum internal frame for shock resistance and zero swelling risk, housed in a durable ABS case. 12V 320Ah Bluetooth 250A BMS Battery
4096Wh Large Capacity & 6000+ Cycles
Massive 320Ah capacity delivers 4096Wh energy with double the density of lead-acid Experience 6000+ cycles at 80% DOD for dramatically reduced long-term costs
Bluetooth Monitoring & 250A BMS Safety
Track SOC voltage and temperature in real-time via the dedicated app The 250A BMS with 300A peak current provides 6-layer protection including thermal runaway prevention
3-Way Charging & 1C Fast Charge
Recharge in just 6.4 hours at 1C rate using solar generator or standard charger inputs for complete flexibility
Lightweight & Easy Installation
At only 59.75 lbs with universal M8 terminals it seamlessly replaces existing systems Space-saving design enables simple one-person setup
All-Weather Performance & Expandable Power
Operates reliably from -4°F to 149°F Connect multiple units for up to 65.5kWh capacity perfect for whole-home backup and off-grid needs
On Jul 30, 2026 at 20:46:06 PDT, seller added the following information: