Naomi DIMM battery replacement
Posted: Fri Dec 07, 2007 4:49 pm
A warning of sorts: these batteries come with some pretty hefty warnings concerning toxicity and explosion - probably a good idea not to think of them as AA batteries you played with as a kid - and do take the effort not to short-circuit them while you assemble your new pack.
The Naomi DIMM has a 3 wire battery pack consisting of small PCB and 2 x Panasonic CGR18650H cells. The H is probably some rating, I used CGR18650CF's which have a bit better capacity. Search for CGR18650, or just 18650 and you should be able to source some locally.
The pack is connected like this:
Open the DIMM and disconnect the battery pack:
Strip off the outer plastic, and you should end up with this:
Desolder the PCB, be careful not to short the battery:
Assemble the new cells with the cell spacer and some electricians tape. Solder the metal part from the old battery pack to the new cells.
Add some more tape:
Solder jumper wires to B-, B+, and BC.
Tape it up, and you're done:
Thanks to InvZim of KC for this :smt007
The Naomi DIMM has a 3 wire battery pack consisting of small PCB and 2 x Panasonic CGR18650H cells. The H is probably some rating, I used CGR18650CF's which have a bit better capacity. Search for CGR18650, or just 18650 and you should be able to source some locally.
The pack is connected like this:
Open the DIMM and disconnect the battery pack:
Strip off the outer plastic, and you should end up with this:
Desolder the PCB, be careful not to short the battery:
Assemble the new cells with the cell spacer and some electricians tape. Solder the metal part from the old battery pack to the new cells.
Add some more tape:
Solder jumper wires to B-, B+, and BC.
Tape it up, and you're done:
Thanks to InvZim of KC for this :smt007