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The example that you've given is is a single cell, linear charge management controller.

For a 26Ah (what voltage?) LiIon (LiPoly?) pack you need a lot more than that. Balancing, temperature monitoring, overcharge/over-discharge protection, current limit.

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That isn't the only chip microchip makes for recharging, but it's probably the cheapest. There are more complicated (larger) chips that do everything from overcharge protection, temp monitoring, etc. Some applications don't need all that fancy stuff. The chip I linked is 4 years old, but they make new versions of the chip almost every year.

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