[Arm-netbook] laptop battery lessons...

Luke Kenneth Casson Leighton lkcl at lkcl.net
Tue Dec 6 22:30:42 GMT 2016


On 12/6/16, Julie Marchant <onpon4 at riseup.net> wrote:
> On 12/06/2016 04:00 PM, Luke Kenneth Casson Leighton wrote:
>>  the battery is radically different: it's an e-bike battery, it's
>> going to be robust as hell (capable of delivering far more than what
>> is being asked of it), so it's simply not going to be made of layers
>> as thin as the samsung battery...
>>
>>  ... also bear in mind that the base is wood: it would flex...
>>
>>  ... but i still don't wish to take any risks, so i'll be increasing
>> the base height by 1mm.  it's a single parameter (i've adjusted it
>> before) but i still have to do a thorough review / walk-round in the
>> CAD.  and re-print everything.  *sigh*.
>
> Then it sounds like you don't have anything to worry about. Keep in
> mind, Samsung's whole debacle came about because they were trying to
> hard to squeeze as much battery life as possible into the phone.
>
> Also, consider the OpenPandora, which has a design that actively
> requires some amount of pressure to be on the battery at all times
> because of how the connector works.

 i'll be soldering wires onto the tabs (they're enormous: about 20mm x
30mm).  with an inline 6A fuse.

> Actually, are you even using a LiPo battery? Plain Li-ion batteries are
> rigid and don't have this problem.

 just reading the datasheet... Lithium Ion (LiCoMn)

should be here:

 http://hands.com/~lkcl/eoma/laptop_15in/EV%20GPNCM62135160%2010Ah%20NiCoMn%20battery%20cell.pdf



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