Checked as a bank of 2 packs, which is the smallest number that accepts this inverter’s 120 amp charge current. Fewer packs still run the system, with the charge rate capped in inverter settings.
Full specifications: Growatt SPF 6000T DVM and Pylontech US3000C.
The four checks
Voltage window: Overlapping window 44.5 to 54 V
The inverter operates from 40 to 60 volts and the battery cuts off outside 44.5 to 54 volts. Both stay inside 44.5 to 54 volts, which covers a normal LiFePO4 charge and discharge cycle with margin at both ends.
Charge current: 120 A into a 148 A limit
The inverter tops out at 120 amps and the battery accepts 148 amps, so a default install cannot overrun the pack. Adding batteries in parallel raises the accepted current further.
Surge rating: Peak draw 250 A exceeds 200 A
A full surge to 12000 watts pulls roughly 250 amps, past this battery’s 200 amp surge rating for 15 s. The BMS is the thing that stops it, which means a motor start can drop the whole system rather than just dimming the lights. Adding a second pack in parallel is the usual fix.
Closed-loop communication: Both speak CAN, RS485, no document names the pair
The inverter and the battery both support CAN, RS485. Neither manufacturer publishes a document naming the other unit, and a shared bus standard is not a shared message format. It may well work on the bench. Confirm the protocol setting with both manufacturers before relying on BMS control.
What this means when you install it
Set the inverter charge current to 120 amps or less. That is the inverter maximum, which this bank can absorb. Protect the battery run with a 175 amp Class T fuse and 2/0 AWG cable wired to a busbar rather than daisy chained, so all 2 packs share current evenly.
The inverter and the battery both support CAN, RS485. Neither manufacturer publishes a document naming the other unit, and a shared bus standard is not a shared message format. It may well work on the bench. Confirm the protocol setting with both manufacturers before relying on BMS control.
Figures side by side
| Field | Growatt SPF 6000T DVM | Pylontech US3000C |
|---|---|---|
| Voltage window | 40 to 60 V | 44.5 to 54.0 V |
| Charge current | 120 A delivered | 148 A accepted (2 packs) |
| Peak draw | 12,000 W surge | 200 A surge (2 packs) |
| Usable capacity | n/a | 7.1 kWh (2 packs) |
| Comms | RS485, CAN | CAN, RS485 |
Manufacturer documents
Manufacturer documents: Growatt product downloads. Figures here should be read against the revision that covers your serial number, because manufacturers revise specifications without changing the model name.
Manufacturer documents: Pylontech product documentation. 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.
Growatt SPF 6000T DVM on AmazonPylontech US3000C 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 Pylontech US3000C
EG4 6000XP with Pylontech US3000C
Specs conflict on at least one field.
EG4 18KPV with Pylontech US3000C
Partial match, some fields unverified.
EG4 FlexBoss21 with Pylontech US3000C
Partial match, some fields unverified.
Sol-Ark 12K with Pylontech US3000C
Partial match, some fields unverified.
Questions people actually ask
Will the Growatt SPF 6000T DVM work with the Pylontech US3000C?
Specs conflict on at least one field. Checked as a bank of 2 packs, which is the smallest number that accepts this inverter’s 120 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 175 amp Class T fuse and holder, 2/0 AWG 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?
The inverter and the battery both support CAN, RS485. Neither manufacturer publishes a document naming the other unit, and a shared bus standard is not a shared message format. It may well work on the bench. Confirm the protocol setting with both manufacturers before relying on BMS control.
What charge current should I set?
The inverter tops out at 120 amps and the battery accepts 148 amps, so a default install cannot overrun the pack. Adding batteries in parallel raises the accepted current further.