I have this power bank but the 2600 mAh capacity isn't enough for my needs. I've got 4 spare 18650 Li-on batteries and I was wondering if I could connect them up to the original circuit in parallel? Here are a few photos of the power bank as it is:
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I have this power bank but the 2600 mAh capacity isn't enough for my needs. I've got 4 spare 18650 Li-on batteries and I was wondering if I could connect them up to the original circuit in parallel? Here are a few photos of the power bank as it is:
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Let us begin with 2600 mAh which is 2600 mAmperes the battery delivers per hour. If this is a typical USB like in the picture, I would guess the battery is a 3.7 Lipo. The circuit on the USB converts from 3.7V to 5V which lowers the amperes. Based on the assumption, 2600 mAh x 3.7 V = 9.6 WH
Is this what you have?
These are 5000mAh. So one cell is also 3.7v and now you have 5000 mAhx3.7 V = 18.5 WH which is double the draw. Bottom line is yes if they are both same volts and the USB circuit does what I surmise is true. Just make sure to get the wiring correct!
Cheers,
Clem
