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Old 06-07-2000, 05:03 AM
Steve_IA Steve_IA is offline
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Default 2 vs. 10 amp battery charging

Would someone be so kind as to explain the benefits vs. disadvantages to re-charging my batteries in the 2 amp vs the 10 amp mode. Is there difference between the cranking battery and the trolling battery? Steve (IA)
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Old 06-07-2000, 12:06 PM
REW REW is offline
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Default RE: 2 vs. 10 amp battery charging

Consider that a typical deep cycle battery has the capability of storing about 150 amps. "typical".
This means that if the battery was 100% discharged, the 2 amp charger would take 75+ hours to recharge and the 10 amp charger would take 15+ hours to recharge.

Generally, a 2 amp charger is considered a "trickle" charger, and is used for maintaining a charge on an already fully charged battery.

The problem with a 2 amp battery charger, is that if the battery is quite discharged, or in less than perfect condition - often the 2 amp charger will never get it charged.

It seems that often, older or used batteries - benefit from the added "kick" to get the batteries charged up with the 10 amp charger.

The typical 10 charger starts charging on a partially or fully discharged battery at a level near 10 amps. As the battery charges, the charge rate "tapers" to a lower level - as the charge builds in the battery. Near the end of the charge, the typical 10 amp charger, will be actually charging at a 2-4 amp rate.

Take care

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Old 06-07-2000, 04:18 PM
Steve_IA Steve_IA is offline
Join Date: Nov 1999
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Posts: 55
Default RE: 2 vs. 10 amp battery charging

Thanks for the clarification. Then am I to understand that other than to "maintain" an already fully charged battery, the 2 amp setting on the charger isn't of any value? I'm assuming this is also true of the cranking battery. Steve (IA)
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