If you need a little power boost while off the grid, you might be interested in these; 'Hydrostiks' from Horizon Fuel Technologies. These dry fuel cells pack a punch - each one is equal to about 10 AA batteries. They can also be recharged using a home fueling station that pulls hydrogen from water. Cost: about 99 USD for the cells, 500 USD for the charging system
Read more about it via Horizon's site:
www.horizonfuelcell.com
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