How do I balance my batteries?

Balancing means getting every battery in your bank to the same state of charge so they share the load and charge evenly. Do this anytime you build a new bank, replace one battery, or notice uneven runtime or a battery tripping the BMS early.

When you need to balance

• One battery reads lower than the others

• The bank shuts off early under load

• Charging finishes too fast or acts inconsistent

• You mixed batteries with different charge levels before wiring (common cause)

How to balance your batteries (recommended method)

1) Disconnect the bank

• Separate the batteries so they are no longer wired in series or parallel.

2) Fully charge each battery individually

• Use the correct lithium charger for that battery’s voltage.

• Charge each battery to 100%, one at a time.

• Let it sit 30–60 minutes after charging so the voltage settles.

3) Verify each battery matches

• Use a multimeter at the terminals.

• Your goal is that all batteries read very close to each other before reconnecting.

4) Rebuild the bank correctly

• Only combine matching batteries (same model, same capacity, same age).

• For parallel banks, use best-practice wiring so the load shares evenly (opposite-corner takeoff).

• For series banks, confirm every connection is tight and correct polarity.

What not to do

• Don’t try to “balance” by leaving the whole bank on a charger if one battery is far behind. That usually does not fix an imbalance.

• Don’t mix different models or capacities in the same bank. That creates imbalance problems over and over.

• Don’t assume a battery is bad because it trips first. Imbalance and wiring issues cause most early shutoffs.

If you would like additional support directly from a customer support technician, please open a ticket at the link below:
https://dakotalithium.com/sales-technical-support/how-to-contact/