USBCELL MXAA02 AA Rechargable Battery – 2 Cell Pack

USBCELL AA Rechargeable batteries – work just like normal rechargeable batteries, but simply pop off the lid to recharge by any powered USB Port. Ideal for use with wireless mice, keyboards, games controllers, household products – in over 2 billion free USB ports. No need to carry or find a separate charger. Easy recharge on the go, in the office or at home. USBCELLs can be charged hundreds of times, saving you money, and helping reduce environmental waste. USBCELLs are NiMH batteries, 1.2v 1300mah capacity. Product information, support and recycling advice available at

USBCELL MXAA02 AA Rechargable Battery - 2 Cell Pack

What the reviewers say

Ingenious product – just not very practical

This product (USBCELL) is based on a great idea – the kind of idea that makes you smack your forehead and exclaim “Why didn’t *I* think of that!” Basically you take a ‘3/4 AA’ NiMH cell, and attach an USB-powered charger on top of it. Now you’ve got a rechargeable AA battery that can be charged from any USB port. So you’ll never be caught without a battery charger – as long as there is a computer nearby.

Great idea aside, there are practical limitations for this USBCELL:
– It is very expensive (about 4 times the cost of a typical AA NiMH cell).
– Its capacity is only 1300mAh (compared to 2000-2700mAh for a typical AA NiMH cell).
– Its charging time is relatively long (5 hours to charge to 90%)

The product description claims that you can also recharge the USBCELL in a “standard approved 250 mAh recharger”. But make sure that the charger is a ‘smart’ one. A timer-based ‘dumb’ charger will badly overcharge the USBCELL, because it treats all cells as having a typical capacity of 2500mAh.

It is true that you don’t need to buy a separate charger for the USBCELL. But the economy of scale is stacked against it in any demanding appliances such as digital camera. For the price of just two USBCELL, you can buy a good charger+battery package (such as the Sanyo USB Charger and Sanyo Travel Charger). This way, you get much greater battery capacity and shorter charging time. For anything that requires more than two AA cells, the USBCELL solution becomes even less cost-effective.

It is also true that using USBCELL instead of disposable alkaline cells can reduce your ‘carbon footprint’ on this planet. But the same can be said for any rechargeable batteries. Compared to a typical AA NiMH cell, the USBCELL requires more energy to produce, and has a shorter lifespan (lower capacity means it has to be recharged more often). Therefore it generates more waste in the end.

Of course, for certain niche applications (such as wireless mouse) the USBCELL is still a good option. At least it looks cool, and makes a great conversation piece.

More Product Details

Amazon price: $14.50
Brand: Moixa
Manufacturer: Moixa Energy Ltd
Model: MXAA02
Rating: 4.5 / 79 (79 reviews)

More information: USBCELL MXAA02 AA Rechargable Battery – 2 Cell Pack

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