Checked as a bank of 2 packs, which is the smallest number that accepts this inverter’s 275 amp charge current. Fewer packs still run the system, with the charge rate capped in inverter settings.
Full specifications: Sol-Ark 15K and HomeGrid Stack’d 48V 9.6kWh.
The four checks
Voltage window: Overlapping window 44.8 to 58.4 V
The inverter operates from 42 to 63 volts and the battery cuts off outside 44.8 to 58.4 volts. Both stay inside 44.8 to 58.4 volts, which covers a normal LiFePO4 charge and discharge cycle with margin at both ends.
Charge current: 275 A into a 300 A limit
The inverter tops out at 275 amps and the battery accepts 300 amps, so a default install cannot overrun the pack. Adding batteries in parallel raises the accepted current further.
Surge rating: Battery surge figure unpublished
A surge to 15000 watts draws roughly 312 amps at 48 volts. This battery publishes a 300 amp continuous rating and no separate surge figure, and continuous is the wrong number to check a motor start against. Confirm the peak rating and its duration with the manufacturer before running motor loads.
Closed-loop communication: Named in a manufacturer document
A manufacturer document names this exact pairing for closed-loop operation over CAN, RS485. That is the only evidence this site accepts for a match on this check. Select the matching protocol profile in the inverter menu during commissioning.
What this means when you install it
Set the inverter charge current to 275 amps or less. That is the inverter maximum, which this bank can absorb. Protect the battery run with a 350 amp Class T fuse and two parallel runs of 2/0 cable wired to a busbar rather than daisy chained, so all 2 packs share current evenly.
A manufacturer document names this exact pairing for closed-loop operation over CAN, RS485. That is the only evidence this site accepts for a match on this check. Select the matching protocol profile in the inverter menu during commissioning.
Figures side by side
| Field | Sol-Ark 15K | HomeGrid Stack’d 48V 9.6kWh |
|---|---|---|
| Voltage window | 42 to 63 V | 44.8 to 58.4 V |
| Charge current | 275 A delivered | 300 A accepted (2 packs) |
| Peak draw | 15,000 W surge | surge unpublished |
| Usable capacity | n/a | 19.2 kWh (2 packs) |
| Comms | CAN, RS485 | CAN, RS485 |
Manufacturer documents
Manufacturer documents: Sol-Ark resources and manuals. Figures here should be read against the revision that covers your serial number, because manufacturers revise specifications without changing the model name.
Manufacturer documents: HomeGrid downloads. Figures here should be read against the revision that covers your serial number, because manufacturers revise specifications without changing the model name.
Both units, current pricing
Prices on these move week to week, and the battery is usually the line item worth watching.
Sol-Ark 15K on AmazonHomeGrid Stack’d 48V 9.6kWh on AmazonComms cableAffiliate 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.
Other pairings for the HomeGrid Stack’d 48V 9.6kWh
Sol-Ark 12K with HomeGrid Stack’d 48V 9.6kWh
Partial match, some fields unverified.
EG4 6000XP with HomeGrid Stack’d 48V 9.6kWh
Partial match, some fields unverified.
EG4 18KPV with HomeGrid Stack’d 48V 9.6kWh
Partial match, some fields unverified.
EG4 FlexBoss21 with HomeGrid Stack’d 48V 9.6kWh
Partial match, some fields unverified.
Questions people actually ask
Will the Sol-Ark 15K work with the HomeGrid Stack’d 48V 9.6kWh?
Partial match, some fields unverified. Checked as a bank of 2 packs, which is the smallest number that accepts this inverter’s 275 amp charge current. Fewer packs still run the system, with the charge rate capped in inverter settings. The four checks below show which field produced that result.
What does this pairing cost to wire up?
Beyond the two units, a 350 amp Class T fuse and holder, two parallel runs of 2/0 battery cable cut to matched lengths, and a busbar if you are running 2 packs. A comms cable if you intend to attempt closed loop, and the pinout is rarely the same between brands.
Where does this pairing go wrong in practice?
A manufacturer document names this exact pairing for closed-loop operation over CAN, RS485. That is the only evidence this site accepts for a match on this check. Select the matching protocol profile in the inverter menu during commissioning.
What charge current should I set?
The inverter tops out at 275 amps and the battery accepts 300 amps, so a default install cannot overrun the pack. Adding batteries in parallel raises the accepted current further.