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joeycastillo / The-Open-Book

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About The battery #60

Closed luka177 closed 1 year ago

luka177 commented 1 year ago

I am willing to add li-ion/li-po BMS to this board, but have few concerns, firstly modern lithium batteries are no joke, so it should be done the right way. We need to add at least 2 ics, one for charging (possibly MCP73831 or BQ24040) and one to protect battery from over-discharge (MIC2776?). But that would add a lot components to solder, we may do universol board so one have to solder either aaa battery bay or lithium stuff. What do you think?

thargas commented 1 year ago

Personally, I'd prefer to lose the AA thickness. I'm unsure how a universal board avoids having to solder the lithium components, but I'm in favor of minimizing the soldering as this would be my first of any kind. I'm thinking maybe I should pick up the iron fist and get some practice.

On Wed., Oct. 12, 2022, 05:53 luka177, @.***> wrote:

I am willing to add li-ion/li-po BMS to this board, but have few concerns, firstly modern lithium batteries are no joke, so it should be done the right way. We need to add at least 2 ics, one for charging (possibly MCP73831 or BQ24040) and one to protect battery from over-discharge (MIC2776?). But that would add a lot components to solder, we may do universol board so one have to solder either aaa battery bay or lithium stuff. What do you think?

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luka177 commented 1 year ago

No no you got me wrong. You SHOULD NEVER EVER solder liion. Just dont. battery will be connected with some kind of connector and glueed with double sided tape. But you will need more soldering to actually solder components needed to charge that battery properly (so no fire and explosions :D)

thargas commented 1 year ago

Thanks for the elaboration and warning. I was meaning soldering the components needed for adding lithium batteries, not the batteries, but best to make sure I'm not about to do something stupid. :-)

joeycastillo commented 1 year ago

You should feel free to do it! But a word of warning, I’m unlikely to want to merge in such a design. I have an idea of several other changes I’d like to make to realize a lipo powered version, and it will likely end up being a fairly different gadget.

It’s open source hardware so you can absolutely do this in a fork and I think it would be rad! But when it comes to the designs in this repository, I do have a particular vision in mind (even if it’s something I may not be able to get to until the first half of 2023).

luka177 commented 1 year ago

Well i would be rather interested to contribute then to create one more dead fork :D Ah and keep in mind HW stuff is just my hobby i am mostly SW guy.