Can I estimate recharge time for a given battery and charger?
You can estimate recharge time by dividing the amps to be replaced in the battery by the charger amp output. For example, you have a 100 amp hour deep cycle marine battery that is 50% down, therefore giving you 50 amps to replace. If you have a 10 amp charger, you divide the 50 amps by the 10 amp charge rate of the charger, and get 5 hours. In reality, the multistage chargers taper the current after about 80% to 85% of the bulk charging is done, so it takes a little longer (closer to 6 hours in this case).
