98% Efficiency LiFePO4 Home Energy Storage System 51.2V 100Ah

EC-WM5120 — Slim Wall Battery for Modern Homes

A good home battery disappears into your wall and your daily routine. The EC-WM5120 is a 5.12kWh wall-mounted battery that charges from your solar panels during the day and powers your home in the evening - quietly, automatically, and with a round-trip efficiency of 98%.

It hangs on the wall like a slim cabinet, takes up almost no floor space, and shows its status on a clear LCD screen. No apps required for basic use, though the companion APP is there when you want details.

At a Glance

A Typical Day With the EC-WM5120

Morning: the sun rises, your solar inverter feeds the house and the surplus starts filling the battery. Afternoon: the battery reaches full charge; the LCD shows 100%. Evening: solar output fades, the battery takes over seamlessly and runs your lights, fridge and TV through the night. Storm night: the grid drops - the battery switches to backup mode in milliseconds and your family does not even notice.

Compatibility First

Most hybrid inverters from leading brands speak CAN or RS485, and the EC-WM5120 speaks both. Before you order, tell us your inverter model - our compatibility list covers hundreds of models, and we will confirm yours works out of the box. Up to four batteries can be paralleled to reach 20.48kWh for larger homes.

Installation in Three Steps

1) Fix the wall bracket to a solid wall with the included anchors. 2) Hang the battery and connect the DC cable to your inverter. 3) Power on and set the time-of-use schedule if you want grid charging. A typical installation takes under an hour.

Designed to Last

LiFePO4 chemistry gives the safest, longest-lasting cells available for homes. The smart BMS balances cells on every cycle, protects against overcharge, overdischarge and extreme temperatures, and the fanless design means there is nothing to wear out. After 6000 cycles - roughly 15 years of daily use - the battery still holds 80% of its original capacity.

Warranty & Delivery

Five-year warranty with delivery in 10-20 working days. Each unit ships with the wall bracket, DC cables, manual and factory test certificate. CE, UN38.3 and MSDS documentation included.

Safety Features

Safety starts with the cell: automotive-grade LiFePO4 with a ceramic separator that resists internal short circuits. The BMS adds six layers of protection - over-voltage, under-voltage, over-current, short circuit, over-temperature and low-temperature charge lockout. A thermal fuse at the pack terminal provides a final mechanical cutoff. The enclosure is made of fire-retardant ABS with an IP55 seal, and the wall bracket is rated for three times the battery weight.

Extended Specifications

Questions We Hear Often

What if my home uses more than 5.12 kWh at night? Add up to three more batteries in parallel, reaching 20.48 kWh. Can it charge from the grid? Yes, when your inverter supports grid charging, set the time-of-use schedule in the APP. Will it work during a blackout? Yes, with a hybrid inverter the battery provides backup automatically. How do I clean it? A dry cloth is enough; avoid water and solvents. Is the APP free? Yes, for the lifetime of the product, with no subscription.

Tell us your inverter brand and we will confirm compatibility and send a quotation within 24 hours.