Macintosh PowerBook 145/160/170 battery replacement

[alexGS]

Ahh you beat me to it, I’ve been looking forward to trying that well done! Now we just have to design the battery holders within the casing.

So, two groups of five 2500mAh cells in parallel. I’m a little surprised as I couldn’t get a 100 to run on five cells (needed six - 7.2V) but the 100 is totally different of course, being intended for SLA. Good to know the 1xx can cope with about 6V, being designed for NiCd.

 

[luRaichu]

Ahh you beat me to it, I’ve been looking forward to trying that well done! Now we just have to design the battery holders within the casing.

I don't think there is any room left for a ten cell AA holder. If you manage to stuff one inside, you hands down win my "Swole Brain of the Year" award.

Good to know the 1xx can cope with about 6V, being designed for NiCd.

Ni-Cd and Ni-Mh are interchangable; charging circuits designed for Ni-Cd should handle Ni-Mh perfectly fine. Although, my pack seems to get a bit toasty with the AA's instead of the green mystery cells.
On a full charge my pack will peak at 7V, then float around 6V before dropping off.

 

[3lectr1cPPC]

You should really add that thermal fuse, especially if it’s getting toasty. Good work though, I need to rebuild one of mine as well.

 

[alexGS]

I don't think there is any room left for a ten cell AA holder. If you manage to stuff one inside, you hands down win my "Swole Brain of the Year" award.

Oh - lol, absolutely agree - I didn’t mean a prefabricated holder, I meant to design spaces for the cells into the 3D-printed part, with terminal plates or - as I use - CAT5 wires stripped and threaded through holes to make contact. Non-tabbed cells are a lot cheaper and easier to get here than tabbed cells. I suppose spot-welding strips on is easier, but more difficult for others to reproduce Actually even non-tabbed cells are relatively expensive so it might be a while before I get around to this