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Old 01-30-2015, 05:34 PM   #1
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Battery maintenence during off season

Should I invest in two battery tenders @ 40 bucks each, one for house, one for engine or can I just remove the ground cables?
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Old 01-30-2015, 06:00 PM   #2
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Remove the ground cables but if you can plug into power then once a month hook back up and let the on board charger charge the house batteries. Use the Battery Tender to maintain the chassis battery. Watch the water level but you probably won't need to add any. Won't be long before you can hit the road!
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Old 01-30-2015, 06:00 PM   #3
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What type of batteries?
Climate where the RV is stored?
Power is readily available for charger?
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Old 01-30-2015, 06:01 PM   #4
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Quote:
Originally Posted by rsnyd00a View Post
Should I invest in two battery tenders @ 40 bucks each, one for house, one for engine or can I just remove the ground cables?
If this is a Motorhome, (you don't give us a lot of information to work with here) I would think it has an Inverter/Converter of some description that charges the Chassis & House batteries when you are plugged in to shore power.

So since it sounds like you have a 120V power supply to run two battery tenders, why not just plug the coach into shore power and forget about the battery tenders?

You will need to dig out your handy Digital Voltmeter and check the battery voltage when plugged in to make sure it is keeping the battery voltage around 13.5 to 13.8 VDC. Do this at least every 6-8 weeks.
At the same time, check the water levels in each cell and add Distilled Water to bring the level up to the rings in each cell. (1/4" or so above the plates)
Also, keep an eye on the terminal connections and make sure you keep them clean so they make good contact.
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Old 01-30-2015, 07:37 PM   #5
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We don't have all the info, so let's assume you have power at a storage facility. My concern with plugging the coach power cord, is that they are expensive and someone may take it. A small dog bone 50 amp to 120v for my coach is also expensive. If you are able to move the charger around when needed I would get one charger, and two quick connect plugs and keep the connectors on the batteries and move the charge around with ease.
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Old 01-30-2015, 08:14 PM   #6
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We don't have all the info, so let's assume you have power at a storage facility. My concern with plugging the coach power cord, is that they are expensive and someone may take it. A small dog bone 50 amp to 120v for my coach is also expensive. If you are able to move the charger around when needed I would get one charger, and two quick connect plugs and keep the connectors on the batteries and move the charge around with ease.
You have 120V power on a 15A breaker.
So, you use a 100' (or long enough for your purpose) extension cord and a 50A to 15A adaptor. You leave your 50A cord and adapters inside your locked power bay and run the extension cord out to your 15A plugin. Much simpler than hooking up chargers etc etc. IMHO
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Old 01-30-2015, 08:47 PM   #7
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You have 120V power on a 15A breaker.

So, you use a 100' (or long enough for your purpose) extension cord and a 50A to 15A adaptor. You leave your 50A cord and adapters inside your locked power bay and run the extension cord out to your 15A plugin. Much simpler than hooking up chargers etc etc. IMHO

I said 50a to 120v dog bone because I thought it was more clear, but yes, it basically a 50a to 15 a adaptor. You got me thinking about the price. I had look at the prices when killing time at my local RV dealer waiting for them to finish my inspection. Wow they were high. Just googled one and found one on eBay for $39. Probably others cheaper, so yes thar would be a good choice. My cord connects on the outside of the storage bays, but I would be willing to gamble $39.
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