IBM 380XD \ VOGONS

IBM 380XD

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First post, by itsmelindsey

Posted on 2025-10-09, 04:27

itsmelindsey Offline

Rank Newbie

Rank: Newbie
Posts: 9
Joined: 2025-08-28, 03:59

Hi All,

Hope this is alright to post here. I was planning to recell my 380XD battery today but disaster struck. The original Panasonic CGR18650 cells are only 62mm long!

The total length available inside the battery cavity is 65mm so I won't be able to fit standard 65mm cells once they are connected.

Does anyone know of some suitable replacement cells? I live in Australia and haven't been able to find any that ship here

Or alternatively, is there a way to run the 380 without sense pin data? I may be able to build a new battery with modern protection

Any help would be greatly appreciated

Reply 1 of 2, by itsmelindsey

Posted on 2025-10-09, 11:49

itsmelindsey Offline

Rank Newbie

Rank: Newbie
Posts: 9
Joined: 2025-08-28, 03:59

I've been tracing out the circuit, and the BMS is an S-8233A type G. It looks like the BMS is designed for 1s3p packs of any Li-Ion chemistry rather than the 2s3p pack that the 380XD battery uses.

Given that the original cgr18650 cells have a capacity of 1400mah each, modern 18650 cells with a capacity of 3600 mah should provide the current required if I replace each parallel group with a single cell. This would let me place 3 cells rotated 90degrees in the space previously containing 6 cells, while still using the original bms board.

Has anyone tried converting a 2s3p to a 1s3p before? How did it go?

Reply 2 of 2, by itsmelindsey

Posted on 2025-10-09, 11:50

itsmelindsey Offline

Rank Newbie

Rank: Newbie
Posts: 9
Joined: 2025-08-28, 03:59

I've been tracing out the circuit, and the BMS is an S-8233A type G. It looks like the BMS is designed for 1s3p packs of any Li-Ion chemistry rather than the 2s3p pack that the 380XD battery uses.

Has anyone tried converting a 2s3p to a 1s3p before? How did it go?

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