Question

Battery for epaper 2.9" needs replaced. What is largest that will fit the case.

Answer 1

Did you measure the case?

Comments

I did, and I made a lot of assumptions about where it would conflict with case or electronics and came up with 8 x 24 x80.  I still had several problems unanswered. 1) did the pack have its own BMS chip. looking at it I think I only saw the attaching tangs and NO BMS. 2) was I trying to push too much into the case (fire Hazzard), 3) Thinking I knew enough about the battery specs, Where would I find such a battery!  I purchased the FULL WORKING OPTION because I wasn't Shure about all of this stuff originally.  I would think that if you have a link to a distributor you would get continuing benefit ($) from this link.  Dave, this was a very curse response.

Answer 2

There is an on-board charger, viz:

• JST LiPo battery connector and charging circuit

That will control charging current to the LiPo, so you don't need a LiPo with on-board BMS, you will find that high capacity LiPo's that are small enough to fit are difficult to obtain as may suppliers are reluctant to send them as most postal services now ban their transportation and if you do find a supplier, they will usually charge you for specialist courier services.

Comments

I went to a local Hobby Store and went to the Remote Control section and showed them the battery I had and asked them if they had any in stock that would have larger capacity 1200mAh that would fit into my case. They had several candidates but only one physically fit. 900mAh. Still larger than the current 600mAh. I had to change the connector, used the one from the old battery and made  sure polarity was correct with meter. I had no luck on internet trying to figure out a size.