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Balancing

2 article(s) on «Balancing». Sorted by severity — most severe first.

Model 3/Y 82 kWh Panasonic (US): frequent module imbalance

American 2021–2022 LR cars show frequent imbalances; the root cause is current leaks through the fuse-wire "fingers" of the 21700 cells. Thresholds (up to 8 mV is fine, alert at >150 mV), a breakdown of the BMS_a029/a064/a074/a079 codes from Toolbox, photos of leaking modules and every treatment option — from module repair (tsk.by's recommendation) to a swap to LG 79.

82RWDAWD

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UpgradeModel 3Model Y

~0 USD

Model 3/Y 54 and 75 kWh (pre-facelift, before 2021): imbalance happens, but less often

The 54/75 kWh packs (pre-facelift) are generally more stable than 82 kWh, but imbalance is possible. What to look at when buying and servicing.

5475RWDAWD

MoreOpen