The indoor WallMount trades some charge current for a quieter, better sealed enclosure meant to live in a utility room rather than a garage. If the install is inside conditioned space, that trade is usually worth it. If the pack will see winter temperatures, read the low-temperature charge cutoff before anything else on the spec sheet.
Published figures
- Usable capacity
- 14.34 kWh
- Capacity
- 280 Ah
- Voltage window
- 44.8 to 58.4 V
- Max charge current
- 150 A
- Max discharge current
- 150 A
- Comms
- CAN, RS485
- Form factor
- Wall mount
- Units in parallel
- 16
How many you need, by inverter
One pack accepts 150 amps. An inverter that can deliver more than that needs more than one, or the charge rate capped in settings. Both are valid, and the second one costs you charging speed on the short days when you need it most.
Communication
Manufacturer documentation names EG4 18KPV, EG4 FlexBoss21, EG4 6000XP for closed-loop operation with this pack.
Where the figures come from
Manufacturer documents: EG4 product and document library. Figures here should be read against the revision that covers your serial number, because manufacturers revise specifications without changing the model name.
Where to buy the EG4 WallMount Indoor 48V 280Ah
Listings for the EG4 WallMount Indoor 48V 280Ah plus the rack hardware and cabling a clean install needs.
Check price on AmazonServer rack for batteryBattery interconnect cablesAffiliate links. As an Amazon Associate this site earns from qualifying purchases, at no extra cost to you. Prices and stock change often, and a listing appearing here is not a statement that the pairing above is approved.
Questions people actually ask
How many EG4 WallMount Indoor 48V 280Ah packs do I need?
One pack accepts 150 amps and holds 14.34 kWh. Match the pack count to your inverter’s charge current first, then check the energy. A Sol-Ark 15K at 275 amps would take 2 of them to charge at full rate.
Does the EG4 WallMount Indoor 48V 280Ah do closed loop communication?
It publishes CAN, RS485. Manufacturer documentation names EG4 18KPV, EG4 FlexBoss21, EG4 6000XP specifically.
How many can I wire in parallel?
The published limit is 16 units.
Which inverters pair cleanly with the EG4 WallMount Indoor 48V 280Ah?
None of the inverters tracked here clear all four checks with this pack. Most land on unverified because nobody has published the comms or surge figure, which is a gap rather than a fault.