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how long for generator to recharge batteries?

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headhunter
Reg. Oct 2004
Posted 2007-05-24 11:38 AM (#61235)
Subject: how long for generator to recharge batteries?



Elite Veteran


Posts: 736
50010010025
Location: Western WA

I am on a waiting list for an RV spot for a show later this summer, and in case I don't get a hookup looks like I'll be generator shopping.   I'll probably be using the generator mainly for recharging my RV batteries.  How long will I have to run the generator each night to recharge my batteries (roughly)?  Need to figure in fuel supply when shopping for a generator. 

Alternatively, if I plugged the trailer into the truck and ran the truck for a while, how long would I need to run my truck to recharge my batteries? 

This is a 5 day show so I'll definitely need to plan on recharging batteries at some point. 

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PaulChristenson
Reg. Jan 2007
Posted 2007-05-24 3:31 PM (#61247 - in reply to #61235)
Subject: RE: how long for generator to recharge batteries?


Expert


Posts: 3853
200010005001001001002525
Location: Vermont

The correct answer is: IT DEPENDS...

See below for charging theories...

http://www.mpoweruk.com/chargers.htm

C H A R G I N G T I M E
Time To Charge Fully Discharged Battery
Battery TypeBattery RatingCharger Output Rating (Amps)
  2 6 10 12 30
Cars/Trucks etc. RCTime to charge your battery (hours)
315 CCA60207431
450 CCA 70238542
550 CCA85NR9652
850 CCA140NR16983
1050 CCA165NR181194
Note change in ratings below to AHAHTime to charger your battery (hours)
small Motorcycle
Garden Tractor
127NRNRNRNR
large Motorcycle
Garden Tractor
3218643NR
Deep Cycle55NR1065NR
Deep Cycle80NR15973
Deep Cycle105NR2012104
NR = Not Recommended for this size battery.

from below...

http://www.battery-chargers.com/charging_instructions.htm

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headhunter
Reg. Oct 2004
Posted 2007-05-24 6:40 PM (#61251 - in reply to #61235)
Subject: RE: how long for generator to recharge batteries?



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Posts: 736
50010010025
Location: Western WA
At first glance those statistics look pretty dismal, like I'd have to run a generator all night to recharge my batteries.  What has everyone's real life experience been? 
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IcePonyGoddess
Reg. Nov 2006
Posted 2007-05-24 6:57 PM (#61253 - in reply to #61251)
Subject: RE: how long for generator to recharge batteries?


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Posts: 792
500100100252525
Location: East Tennessee, USA, Planet Earth
Originally written by headhunter on 2007-05-24 6:40 PM

At first glance those statistics look pretty dismal, like I'd have to run a generator all night to recharge my batteries. What has everyone's real life experience been?
what will you be using your batteries for? 90% of my horse camping is dry camping (no electric pedestal).i haul with an RV and i use my batteries (bank of two) to run my water pump, lights and ...if it's cold enough the heater fan. i have to run out of "juice". i don't leaving lights running, i use only the ones that i need and shut them off as i move thru the RV.in the morning, i check my battery level, and if it's low, i run my gen for about 30-60 minutes to recharge the battery bank.did you have a battery level indicator?
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headhunter
Reg. Oct 2004
Posted 2007-05-24 7:23 PM (#61254 - in reply to #61253)
Subject: RE: how long for generator to recharge batteries?



Elite Veteran


Posts: 736
50010010025
Location: Western WA
It will mainly be for lights and the water pump.  And the show is in the Sacramento area the end of August so I don't expect to need to run the furnace, although I might be wanting to run A/C to cool things down before going to bed (I realize that would only happen when the generator is running).   I also will need to check my email so will need to recharge my laptop batteries too. 
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Painted Horse
Reg. May 2005
Posted 2007-05-24 10:47 PM (#61260 - in reply to #61235)
Subject: RE: how long for generator to recharge batteries?



Expert


Posts: 2453
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Location: Northern Utah

I found that if I turned my generator on for 1-2 hours a day, I never seemed to drain my batteries. 

So if you turn it on to run the A/C for a couple of hours before bedtime. It'll charge up the batteries enough to get by.

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