Battery matching and version type guide

Several Fox battery ranges have undergone hardware changes since their initial release and may therefore be available as different versions and/or with a different connector type. If you are looking to expand your storage capacity, please be mindful of the guidance provided below. For general guidance relating to battery expansion, see this article.

Mira HV25

The MIRA HV25 has only the one iteration and there are no compatibility issues to consider.

HV2600

If your system includes HV2600 batteries, you need to identify whether your Battery Management System (BMS) is Version 1 (V1) or Version 2 (V2). While both models remain in use, recent supply chain changes have led to compatibility challenges.

How to Identify Your HV2600 Battery Version

Some V1 batteries may be labelled as ‘Version C’ or ‘Version D,’ both of which are considered V1 and can be used together. The best way to check is by looking at the BMS serial number:

• Version 1 BMS Serial Number Prefix: 60 BBHV1
• Version 2 BMS Serial Number Prefix: 60 BBHV2

Battery serial number format prefix:

• Version 1 602H262
• Version 2 60QH262 or 60NH262

ECS/EQ Batteries

Earlier versions of the ECS battery range underwent hardware changes with different battery versions and battery connection types being in the market at the same time. Please refer to this chart for guidance:

Battery Model	Version	Connector Type	Serial No. Ref
ECS2900
Master	1	B	CM292
Slave	1	B	CS292
Master	2	B	TM292
Slave	2	B	TS292
Master	2	A	JM/KM/8M/QM292
Slave	2	A	JS/KS/8S/QS292
ECS4100
Master	1	B	CM412
Slave	1	B	CS412
Master	2	B	LM412
Slave	2	B	LS412
ECS4300			ECS4300/EQ4300 can be installed in same stack
Master	N/A	A
Slave	N/A	A
EQ4300	N/A	A
Master	N/A	A
Slave	N/A	A
ECS4800			ECS4800/EQ4800 can be installed in same stack
Master	N/A	A
Slave	N/A	A
EQ4800	N/A	A
Master	N/A	A
Slave	N/A	A