EG4 Outdoor 16kWh Battery
16kWh of lithium storage built to live outside. The IP67 enclosure shrugs off rain, dust, and a hose-down, and internal heaters keep it working through a cold snap. Smart BMS, Bluetooth and Wi-Fi monitoring, and parallel support up to 32 units when you need more.
- Comms
- Bluetooth, Wi-Fi, CAN/RS485
- Voltage
- 48V
- Capacity
- 16 kWh
- Warranty
- 10-year limited
- Amp hours
- 314 Ah
- Chemistry
- LiFePO4
Storage that mounts outside.
The EG4 AllWeather WallMount Battery is a 48V LiFePO4 battery that holds 16kWh in a single 314Ah unit. The whole thing is rated IP67, so it bolts to an exterior wall and stays there, no battery closet or conditioned room needed. Internal heaters keep the cells in their working range through cold weather, and the smart BMS handles balancing and protection on its own.
16kWh in one box
314Ah of usable LiFePO4 storage for whole-home backup, time-of-use shifting, or off-grid runtime.
Built to live outside
IP67 enclosure keeps out dust and water, so you can wall-mount it on an exterior wall instead of finding indoor space.
Cold-weather heaters
Internal heaters bring the cells up to temperature so the battery still charges and discharges when it gets cold.
Smart BMS onboard
Active cell balancing, protection, and state-of-charge tracking handled by the EG4 management system.
Monitor from your phone
Bluetooth and Wi-Fi let you check the battery and push firmware updates through the EG4 app.
Parallel up to 32
Start with one and add more. Auto-addressing in closed-loop comms keeps the install simple as the bank grows.
This is the battery we reach for when there is no good indoor spot for storage. It suits residential and light commercial solar-plus-storage jobs, off-grid builds, and backup power setups that need real capacity. It runs UL 9540 with the EG4 FlexBOSS18 and FlexBOSS21, so it slots straight into those systems.
More Batteries
EG4 Battery Cabinet 6 Slot
The EG4 6-Slot Battery Cabinet is the wall-mounted enclosure for stacking up to six EG4 rackmount batteries into a single bank. Each slot holds one 48V LiFePO4 server-rack-style battery, and the cabinet handles the cable runs, mounting points, and the side panels that keep the install looking clean. Six 100Ah batteries inside this cabinet builds out to roughly 30kWh of usable storage at 48V, which covers most whole-home backup or off-grid scenarios without needing a second cabinet. The arrangement keeps the comms and DC cabling inside the enclosure, with the inverter run out the top or bottom. Sold as the cabinet only. Batteries are sold separately. Pairs with EG4 rackmount lithium batteries like the LL-S and Lifepower4. Bolts to a wall stud and accepts batteries from the front.
$789
EG4 Battery Rack (3 Slot)
The EG4 3-Slot Battery Rack is the smaller sibling of the 6-slot cabinet. It holds up to three EG4 rackmount batteries in a server-rack format and works as a free-standing rack or wall-mounted bank for smaller off-grid and backup builds. Three 100Ah batteries inside this rack lands at roughly 15kWh of usable storage at 48V, which covers a critical-load backup or a starter off-grid bank. Step up to the 6-slot cabinet if you're sizing for whole-home backup or a longer off-grid runtime. Sold as the rack only. Pairs with EG4 rackmount lithium batteries like the LL-S and Lifepower4. Cable management runs inside the rack, with the inverter connection out the back or top.
$500