xbrite
Newly Enlightened
Is there anyone who destructed the battery and checked the protection circuitry? I assume the Pila has a round PCB which contains the protection circuit and attached the PCB on top of the plus pole. If somebody has the schematic, it would be great.
I have a schematic but it has a protection PTC between the minus pole of the battery and the minus output and so the ground is not common.
As the price of normal 18650 Li-Ion cell is around U$2-3 in volume from the manufacturer, the price of Pila cell seems away too expensive. I guess somebody can make the protection circuit very small and cheap for all of us.
I think the 18650 is the right size as it is the same size as 2X123 with 3.7V, 2A capacity. No memory effects, 500 charge/recharge cycles. Run 3W LED for 2 hours!
I have a schematic but it has a protection PTC between the minus pole of the battery and the minus output and so the ground is not common.
As the price of normal 18650 Li-Ion cell is around U$2-3 in volume from the manufacturer, the price of Pila cell seems away too expensive. I guess somebody can make the protection circuit very small and cheap for all of us.
I think the 18650 is the right size as it is the same size as 2X123 with 3.7V, 2A capacity. No memory effects, 500 charge/recharge cycles. Run 3W LED for 2 hours!