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V5F Battery/BMS/Charger Problem


jaiong
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V5f doesn't charge or turn on. With shell removed and tested, battery indicates zero voltage (72v original, 84v charger). On charger connect, registers 24v for 5 seconds, then drops back to zero. Battery, bms, charger or sleep problem?

https://youtu.be/JK-phwb74-4

Another Li-po 48V scooter battery registers 24v, when lamp connected flickers on/off at maybe 10 blocks/second. Problem/solution?

Edited by jaiong
Grammar correction
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1 hour ago, jaiong said:

V5f doesn't charge or turn on. With shell removed and tested, battery indicates zero voltage (72v original, 84v charger). On charger connect, registers 24v for 5 seconds, then drops back to zero. Battery, bms, charger or sleep problem?

Could be quite any combination of the above mentioned - most presumably is the battery (some cells) dead.

Anyhow you should be very cautious with this battery pack! Dead cells can be dangerous.

Quote

https://youtu.be/JK-phwb74-4

Another Li-po 48V scooter battery registers 24v, when lamp connected flickers on/off at maybe 10 blocks/second.

Same as above.

Quote

Problem/solution?

Replace the battery pack and check your chargers.

Ps.: You should have started a new topic - this here is an almost not related, "dead" topic.

PPS.: ... so i split your post into a new topic - i hope you consent to the newly choosen title - if not, i can gladly change it.

Edited by Chriull
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