What is the best way to assemble a 12V 2.5A 500mAh+ power supply?

D

Dmitry Shalimov2016-10-03 00:22:03

Batteries

Dmitry Shalimov, 2016-10-03 00:22:03

There is a need for a power source with the ability to recharge with a voltage of 12v, capable of delivering 14.4w and with a capacity of at least 500mAh. The biggest problem is the dimensions of 150x120x8. The width and length can be slightly increased, or the source can be divided into several modules, each of which will be located in an identical pocket. The maximum can be divided into 4 parts.

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2 answer(s)

E

EmmGold, 2016-10-03
@Akui_Aru

AAA Ni-Mh a dozen in a row.

A

Andrey Ermachenok, 2016-10-03
@eapeap

It is not clear how much this crap should cost, how stable 12V should be, how this crap should work and how to charge.
I would take 3 large cell phone or tablet lithium coin cell batteries to provide 2.5A suitable for size and price. The voltage of one charged battery is 4.2V, the entire battery is 12.6V. When discharging, the voltage of each drops to 3.6V - a 10.2V battery.
There will be a more intelligible TK - there will be other options.