Join Date: Apr 2004
Location: Mountain View, CA
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The way I counted is the following:
- each battery can be recharged 2100 times (the 1st gen could be recharged 1000 times)
- if you had to recharge the battery every 2 weeks it would make 26 recharge per year
- battery would last you 80 years
Even at the cost of $5 per battery (the current cost is $14 a pack of 4), I will not worry about the cost of it.
As for safety, the remote will shutdown when it detect low battery so will not let you discharge it completely.
And for charging the internal charge circuit seem to shutdown the charge when it think the battery is full (the battery is cold, meaning that it stop charging), so I think that it is pretty safe. In any case I think that NiMH battery can handle over charge better than Li-ion batteries.