The coolants they use are supposed to last the lifetime of an air conditioner, but accidental damage, wear and tear, contaminants and other issues can spring up. In these cases, the air conditioner may need a charge of coolant after the issues are fixed.
Fitbit One requires about 1 hour to charge fully. The battery life can go up to 10 â 14 days, which is a great news for all the Fitbit One users. Align the gold contacts on your tracker with the gold contacts on the inside of the charging cable, and then plug it into your computerâs USB port.
Fitbit Charge. 1  Price: $129.95 from Fitbit. 2  Features: The Charge is a step up in price and features from the One and the Flex. 3  Battery life: Seven to 10 days.  Good fit for: Dedicated athletes who want an all-encompassing sleep and activity tracker without having to pay the price of a more advanced smartwatch.