I am sick of all these devices needing batteries.
There has been previous attempts to come to a common
battery standard for flat form factors. But I have no seen
one battery get any form of traction and it is making me
suuuuper aggggrooo (in the captain planet
While mobile phone battery standard is probably a lost
cause, I have seen "nokia" batteries repurposed for
devices like those cheap "radios" from ebay.
What I'm proposing is a flat battery socket standard that
allows for minimum cost in implementation and pushes
most of the cost to the interchangeable battery itself. As
for why? Because many of these devices can be powered
off 5v usb, and maybe the designer want to make
"rechargeable batteries" optional.
Also while this battery may cost a bit more, it can be
used in multiple other devices as well. Plus burning the
charging circuit will only kill the battery... not the whole
* Most device are powered by 5V usb.
* Devices using 5V uses the 5V in passthough, however
some are 3.3V. This means 5V usb is stepped down to
* Most lithium ion batteries are 3.3V , so for 5V device...
need some ways to step it up.
## Design of the socket ##
For 3.3V there is only a battery socket. For 5V device,
there is also socket for a 3.3 to 5V stepup.
### Battery Socket ###
Form factor: Thin rectangle. (like Nokia battery)
Pins located at side of battery: [Gnd] [Charge 3.3V to
[PWM battery capacity status] [3.3V out]
Battery Electronics: Charger circuit. 3.3V overcurrent
### 3.3V to 5V stepup Socket ###
A module that allows for 3.3V cells to be used with 5V
device. It's pins are located next to the battery socket.
Means you could combine the two for cost savings.
Pins located at side of module: [Gnd] [3.3V in] [5V out]
### Combined Battery Format ###
Eventually when cost comes down enough, all these flat
batteries will combine both the battery & the "3.3Vto5V"
output. Thus freeing up more space for more power
For success, the socket design should be open for
to use, from hobbyist to industrial.