USB AA/AAA Charger

We tested more than a dozen different AA chargers to find the best and this is it. Charges both AA and AAA rechargeable batteries (NiMh only please) and the AA's can be used to charge your smartphone or other USB device. Batteries are not included.


  • smartphone charges from standard AA Ni-MH batteries
  • hours in the sun to fully charge standard AA Ni-MH batteries
  • hours connected to a USB power supply to fully charge standard AA Ni-MH batteries

USB AA charger how it works

  • USB AA / AAA Charger
  • USB Charging Cable (allows AA and AAA batteries to be charged from any USB port or 6 Volt Voltaic solar panel)
**Not Included - Ni-MH Rechargable AA's or AAA's**
Charge Times:
  • Charge time for 2300mAh AA Ni-MH battery from USB supply: 13 hours
  • Charge time for 2300mAh AA Ni-MH battery from 2W solar panel: 8.5 hours
  • *NOTE* Charge times vary based on mAh capacity of the battery
Output Charge Rate for cell phone / USB device:
  • 5V DC 300mA
Size and Weight
  • Weight: 1.7oz (48.2g)
  • Length while collapsed (no batteries): 2.6in (6.5cm)
  • Length while open for AAA batteries: 3.4in (8.6cm)
  • Length while open for AA batteries: 3.7in (9.3cm)
  • Width: 1.5in (3.9cm)
Battery Compatibility:
  • AA or AAA Ni-MH Rechargeable batteries (any capacity)
USB Discharging Compatibility:
  • Discharges power from rechargeable or non-rechargeable batteries
  • iPhones, Android, Samsung, and Nokia phones
  • Almost any device that charges from a USB cable
Not Compatible:
  • Non-Rechargeable Alkaline AA or AAA batteries (do not try to charge these batteries)
  • Voltaic 12V or 18V solar panels (make sure the panels / circuit box are set at 6V when solar charging)
  • Tablets (charge will be very slow if it charges at all. For tablet charging consider other Voltaic products)

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