Author Topic: 5 question about Battery Chargers  (Read 1870 times)

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zingarofunkart

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5 question about Battery Chargers
« on: October 14, 2013, 05:26:10 AM »
1. can you leave the charger unpluged from the ac but left hooked up to the battery?

2.can you hook up multipal chargers, ie a 6 amp and a 1 amp to the same battery but only plug one chager into the ac?

3. Can you run both chargers, ie 6/1 amp at the same time? ... if so will that net 7 amps?

4. How long can the power cord b from a generator to a battery , say using # 12 wire, ie honda 2000 to bat bank? ( im wanting to use both 35 feet apart)

5. Any way to determine state of charge using an older charger without waiting for any length of time to dissapate surface charge?

thx ...z

dnix71

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Re: 5 question about Battery Chargers
« Reply #1 on: October 14, 2013, 08:17:54 AM »
1. Yes, but not best practice. You are depending on the diodes or relays in the charger to prevent drain back.
2. Yes, but really not good practice at all. See #1.
3.Yes, but it will not net 7 amps. Chargers normally regulate their current based on voltage. You only get 7 amps when the battery is very low. 6 amp and 1 amp is a serious mismatch. 1 more amp isn't going to get you much. There are 10 amp charger easily available if you need faster charging. Nothing wrong with having 2 chargers. One can always be a backup in case one quits.
4.12 gauge is pretty heavy duty. At least 85 feet I think at 1875 watts. Your example is nowhere near that far or high current.
5.No. Read volts with a meter after unplugging the charger for a minute. 13v and up is full for an SLA, 12.8v and up for a flooded battery.