Illustrative equipment photography, not this model.
BigBattery battery
The Etheron discharges considerably harder than it charges, which is an availability question on short winter days rather than a safety one. Plan the recharge window, not just the load.
Published figures
Usable capacity
15.36 kWh
Capacity
300 Ah
Voltage window
44.8 to 58.4 V
Max charge current
150 A
Max discharge current
250 A
Comms
CAN, RS485
Form factor
Floor standing
Units in parallel
8
Source status: Provisional figure Typical street price $4,500 to $6,000. Charge and discharge limits are per unit. Wiring packs in parallel raises both.
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.
No document tracked here names a specific inverter for closed-loop operation with this pack. That does not mean it will not work. It means nobody has published the test.
Where the figures come from
Manufacturer documents: BigBattery product manuals. 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 BigBattery Etheron 48V 15kWh
Listings for the BigBattery Etheron 48V 15kWh plus the rack hardware and cabling a clean install needs.
Affiliate 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 BigBattery Etheron 48V 15kWh packs do I need?
One pack accepts 150 amps and holds 15.36 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 BigBattery Etheron 48V 15kWh do closed loop communication?
It publishes CAN, RS485. No document tracked here names a specific inverter, so any closed-loop claim needs confirming with both manufacturers before you rely on it.
How many can I wire in parallel?
The published limit is 8 units.
Which inverters pair cleanly with the BigBattery Etheron 48V 15kWh?
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.
