EASUN POWER 15kWh 51.2V 300Ah LiFePO4 Solar Home Storage Backup Battery RS485 BMS
✅ 15 kWh 48V Lithium Solar Battery – XXL Capacity for Maximum Energy Independence
- Long Lifespan – Over 6,000+ charge cycles, lasting 3× longer than lead-acid batteries for superior cost efficiency
- High Output Power – Supports up to 15 kW, powering multiple household appliances at the same time
- Flexible Expansion – Parallel connection of up to 16 units for scalable capacity and tailored energy solutions
- Grade-A LiFePO4 Cells – Premium cells for consistent performance and safety
- Built-in 300A BMS – Advanced protection against overcharge, deep discharge, overcurrent, and overheating
- Space-Saving Wall-Mount Design – Only 29.29 × 20.47 × 11.03 in, perfect for compact installations
- Lightweight Construction – Weighs just 265 lbs, about 60% lighter than lead-acid batteries, easy to handle and install
- Practical Daily Runtime – 1000W air conditioner (15.36h), 60W TV (256h), 900W microwave (17.07h), 800W coffee maker (19.2h), 800W refrigerator (19.2h)
- User-Friendly Operation – On/Off switch with status indicator, includes power cable and mounting brackets
- Smart Communication – CAN/RS485 protocols, compatible with most inverters on the market
- Secure Checkout – PCI-DSS compliant
- Fast Delivery – Ships from UK
- 2-Year Limited Service – easy claims & lifetime tech support
- 30-Day Return Policy – hassle-free process
👉👉👉Download the full user manual & installation guide:
Efficient. Safe. Future-Proof.
Experience the next generation of energy storage — compact, powerful, and reliable.
Our wall-mounted 48V LiFePO₄ solar battery combines top-tier safety with over 6,000 charge cycles, delivering a stable output of up to 15kW.
Perfect for homes, mobile applications, or commercial projects, it is flexible to expand and compatible with most inverters on the market.
Safe Reliable
Utilizes LiFePO4 chemistry, known for its superior thermal and chemical stability
Built with A+ grade cells, 6000+ cycles @ 80% DOD，offering low risk of overheating or fire
Features multiple protection mechanisms: over-voltage, over-current, short circuit, temperature, and more
Flexible & Scalable
Wall-mounted & modular design saves space and supports parallel expansion
Wide compatibility with off-grid and hybrid solar systems
Perfect for residential backup, small commercial setups, telecom, and off-grid cabins
Silent, maintenance-free operation — ideal for indoor installation
Smart Management System
Equipped with advanced BMS (Battery Management System)
Real-time monitoring of voltage, current, temperature, and state of charge
Supports RS485/RS232/CAN communication, seamlessly integrates with major inverter brands
Automatically balances cells to maximize battery lifespan and efficiency
Compact, Versatile & Ready for Any Scenario
The wall-mounted modular design saves valuable space and allows parallel expansion to meet growing energy demands.
With broad compatibility with off-grid and hybrid solar systems, it’s ideal for home backup power, small businesses, telecom installations, and remote cabins.
Its silent, maintenance-free operation makes it perfectly suited for indoor installation.
📊 Specification
With This Battery You Can Power Up…
⛵ Marine & 5th Wheel
Upgrade your home energy storage with 15kWh capacity, support up to 16 batteries in parallel — ideal for household backup.
🚐 RV & Cabins
Reliable off-grid power for RVs, tiny houses, and remote cabins. Keep your essential appliances running smoothly anywhere.
⛵ Marine & 5th Wheel
Safe, long-lasting LiFePO4 power for marine applications and fifth-wheel trailers, ensuring stable energy on the move.
Frequently asked questions
Still looking for an answer?
1.What is the safe charge and discharge voltage range?
Nominal voltage is 51.2 V, made from 16 cells (3.2 V nominal each).
Full charge (max) is 58.4 V → ~3.65 V per cell.
Discharge cutoff (min) is 40 V → ~2.5 V per cell
2.What are the standard and maximum currents?
Standard charge/discharge: 50 A (≈ 0.25 C).
Max continuous charge/discharge: 100 A (≈ 0.5 C), only at temperatures ≥ 10 °C(51.2V-300Ah is 200A)
BMS will shut off charging/discharging beyond the limits.
3.Can I fast-charge this battery?
Fast charging within the design specs (up to 0.5 C) is acceptable. Going above can stress the battery, reduce cycle life, or trigger BMS protection
4.Are there any hidden costs?
No, there are no hidden costs. All charges, including taxes and shipping (if applicable), are clearly displayed at checkout. We value transparency and aim to provide a hassle-free shopping experience.
5. What is the expected lifespan of this battery?
Our chargers are compatible with all Qi-enabled devices, including a wide range of smartphones and accessories. We recommend checking your device’s specifications to ensure wireless charging support.
6. How do I monitor SOC and cell balance?
BMS performs passive balancing automatically when a cell hits ~3.40 V.
SOC LED indicators show ranges: 0–25%, 25–50%, 50–75%, ≥ 75%.
LCD shows voltage, current, temperature, and balance status.
7. Can I wire multiple batteries for higher voltage or capacity?
Series wiring is not recommended unless done by the manufacturer.
To expand capacity or voltage, it’s safer to use fully compatible modules managed by same-series BMS (max 16 units parallel).
Improper series/parallel wiring may cause imbalance, risk, or invalidated warranty .
8. Can I use a lead‑acid charger to recharge?
No. Lead‑acid chargers operate at lower voltages (≈ 2.3–2.45 V per cell), which results in undercharging and no proper balance—this shortens life and affects capacity. Use a charger designed for LiFePO₄ chemistry (≈ 3.6–3.65 V per cell)
9. Is this battery safe? What about fire risk?
LiFePO₄ chemistry offers higher thermal and chemical stability versus other lithium-ion types.
It’s significantly more resistant to thermal runaway; cell thermal runaway occurs at around 220–240 °C, much higher than NMC‐type cells (~160–230 °C)
Still, avoid physical damage, overcharging, and exposure to extreme temperatures.
Don’t leave it charging unattended, and use only manufacturer-approved chargers and equipment.
Pro Tip: To maximize battery life:
Keep discharge depth ≤ 80% (avoid full cycles regularly).
Operate and store at moderate temperatures (~25 °C ideal).
Avoid charging below freezing, and don’t overcharge beyond cutoff voltages.
