# DC 5V 10000mAh Lithium Ion Battery & Charger Circuit

I am looking for a 5V DC 10,000mAh Lithium Ion battery and charging circuit that I can plug into a walwart.

It needs to ship from the US because I need it before April 22nd and it needs to cost \$20-30

I am also having trouble finding a charging circuit for a 5V lithium ion battery pack, if you can point me in the direction of one it would be much appreciated.

I have found one battery here but the problem is that it ships from china and wont be here in time. (http://www.aliexpress.com/store/product/DC-5V-10000mAh-12V-4800mAh-Super-Rechargeable-Lithium-ion-Battery-for-camera-DVR-DC0512v/113429_798186569.html)

I am using it to power a stepper motor that runs at 1.2A

I don't think there is any such thing as a 5V lithium ion battery.

Depending on the chemistry, battery cells have a characteristic voltage based on the chemistry, and multi-cell batteries are multiples of that voltage. For example, Lipo batteries have a nominal voltage of 3.7 volts, or 7.4 volts, or 11.1 volts ..... not 5V

Also, the capacity of a charger is determined by it's current supply ability, not the size of the battery. For a specified charger output current, bigger batteries just take longer to charge.

michinyon: I don't think there is any such thing as a 5V lithium ion battery.

Depending on the chemistry, battery cells have a characteristic voltage based on the chemistry, and multi-cell batteries are multiples of that voltage. For example, Lipo batteries have a nominal voltage of 3.7 volts, or 7.4 volts, or 11.1 volts ..... not 5V

Also, the capacity of a charger is determined by it's current supply ability, not the size of the battery. For a specified charger output current, bigger batteries just take longer to charge.

3.7 volts would be fine. I just don't want to use a polymer battery because of the fire danger.

So does anyone know of a cheap low voltage rechargeable 10Ah battery?

duncan916:

michinyon: I don't think there is any such thing as a 5V lithium ion battery.

Depending on the chemistry, battery cells have a characteristic voltage based on the chemistry, and multi-cell batteries are multiples of that voltage. For example, Lipo batteries have a nominal voltage of 3.7 volts, or 7.4 volts, or 11.1 volts ..... not 5V

Also, the capacity of a charger is determined by it's current supply ability, not the size of the battery. For a specified charger output current, bigger batteries just take longer to charge.

3.7 volts would be fine. I just don't want to use a polymer battery because of the fire danger.

Lithium-ion and lithium-polymer batteries share the same concerns as far as charging/discharging/fire risks and other safety concerns. The poly cells tend to have more vulnerable packaging so possibly more vulnerable to mechanical damage, but both need the same care in charging and discharging practices.

http://en.wikipedia.org/wiki/Lithium-ion_battery

http://en.wikipedia.org/wiki/Lithium_polymer_battery