8500mAh per cell that cost $8 to replace, doesn't sound appealing whether a batterypack of the same mAh is smaller aand can be charged anywhere with a plug.
Thats the point though, with this you can be 'off grid', not relying on solar etc
The cost of the cells is unclear as it mentions that they can be 'recharged' by the user
Thats the point though, with this you can be 'off grid', not relying on solar etc
The cost of the cells is unclear as it mentions that they can be 'recharged' by the user