Hi All,

 

I built a circuit to be used as a small handheld device. But it takes 5V and consumes quite a lot of power. So I'm thinking of using rechargeable battery as the power source. 

 

Is there any handheld case that comes with built-in rechargeable battery (preferably with charger as well)? I hope, with this kind of cases, I can just need to put my circuit in and the the built-in rechargeable battery will provide the power. When the power drains out, I just need to insert the charger plug into it to charge up the battery. 

 

Is such thing available in the market? If not, Can someone suggests how to make something like that myself? Or some alternate solutions? I just can't use standard battery since my experiment shows that the device will drain out 4 AA alkaline batteries in 2.5 hours, which is too expensive?

 

Thanks in advance!

 

John

 

 

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