In a parallel battery bank, the connection arrangement influences current sharing. The review should include cables, terminals, protection devices and common connection points—not just the number of batteries.
Think about the complete current path
Different path resistance can cause units to carry unequal current. Cable length is one contributor, but terminals and other connections also matter. Follow the approved battery-bank layout instead of improvising a chain of enclosures.
Use the approved system drawing
The installer should check conductor sizing, protection and isolation against the exact equipment and local rules. This article is a purchasing checklist, not a wiring diagram or cable-sizing instruction.
Record current during commissioning
Where supported diagnostics are available, compare battery currents under a stable load and preserve the operating conditions. An unexpected imbalance should be investigated before treating the bank as ready for full service. General background is available in Victron’s battery-bank wiring guide; use the selected product’s manual for the actual installation.
Details to confirm
- Approved parallel drawing
- Cable and connection path
- Per-unit current and alarms
- Protection and isolation plan
Does equal cable length solve every imbalance?
No. Battery condition, settings, connections and the complete path also need review.
Product and project review
See the related Graspmart battery specifications and compare the available capacities. Use the reference data to shortlist a platform, then confirm the exact production model, accessories and operating limits in the quotation.
Send the inverter model, destination, quantity and the requirements listed above through the project enquiry form. Include existing equipment details when the battery is being added to an installed system.
