RV Battery question

quasi wrote:
Good question Fulltimer50. The short answer is yes, the procedure for testing a deep cycle (RV) lead acid battery is the same as for a starting battery. For the long answer and the definitive way to properly test a lead acid battery,check out www.pacificpowerbatteries.com, scroll down and click on battery school then deep cycle batteries.

(For some reason, I can't paste the link in this response.)

There's more to testing a battery properly than clamping a load tester and reading a go/no-go gauge. (Release the Trolls . . . )

Jim

You are so CORRECT,,, a lead acid battery (most) is just 2 items from being a life form...

and a 12.6 volt battery is really (6) 2.1 volt batteries...
each its own chamber.. and LIFE.
and 1 under performer affects the other 5. directly or indirectly.

43 years in the business .. I learned a few things.

Good question Fulltimer50. The short answer is yes, the procedure for testing a deep cycle (RV) lead acid battery is the same as for a starting battery. For the long answer and the definitive way to properly test a lead acid battery,check out www.pacificpowerbatteries.com, scroll down and click on battery school then deep cycle batteries.

(For some reason, I can't paste the link in this response.)

There's more to testing a battery properly than clamping a load tester and reading a go/no-go gauge. (Release the Trolls . . . )

Jim

Fulltimer50 wrote:
Is a load test designed for a starting battery going to be a useful test for a RV use battery?

Yes, it will work just fine.

Fulltimer50 wrote:
Is a load test designed for a starting battery going to be a useful test for a RV use battery?

Are you serious or stirring the pot?

Is a load test designed for a starting battery going to be a useful test for a RV use battery?

Chuck's post above is right on the money. Have it load tested.

Veebyes wrote:

Chuck_thehammer wrote:
only way to properly TEST a battery .... is a 100 amp load test..

most auto part stores test batteries.. just make sure its a 100 amp test.. all others are a waste of time...

think of battery power as water for a minute..

1 oz of water is 12 volts.
5 gallons of water is 12 volts.

the amount of water is the WORK.. not that water is there.

so you can have 12 volts and almost no amps.
so no work can be done...

Having your own is good. For $30-$40 saves the hassel of lugging the battery to Autozone, or whoever, & bringing it back.

You are Correct..
as I am a retired auto mechanic.. all of my STUFF is at home....
100 amp load tester...
1000 amp meter. yes 1000 amp (starter testing)
2 tool chests...etc. a ton of air tools... you name it.

but most do not own one .. an may test a battery every 8 years or so.

and where can you find a TRUE 100 amp load tester for 40 bucks?
mine was over 150.. 20 years ago.

Chuck_thehammer wrote:
only way to properly TEST a battery .... is a 100 amp load test..

most auto part stores test batteries.. just make sure its a 100 amp test.. all others are a waste of time...

think of battery power as water for a minute..

1 oz of water is 12 volts.
5 gallons of water is 12 volts.

the amount of water is the WORK.. not that water is there.

so you can have 12 volts and almost no amps.
so no work can be done...

Having your own is good. For $30-$40 saves the hassel of lugging the battery to Autozone, or whoever, & bringing it back.

In order to charge a battery to a nominal 12.6 volts, the charger will supply well over 13 volts. With only the battery's internal loss, they may retain the higher voltage for a time. My concern would be why the voltage dropped off initially and why the charger allowed the charging to continue beyond the normal set point.

only way to properly TEST a battery .... is a 100 amp load test..

most auto part stores test batteries.. just make sure its a 100 amp test.. all others are a waste of time...

think of battery power as water for a minute..

1 oz of water is 12 volts.
5 gallons of water is 12 volts.

the amount of water is the WORK.. not that water is there.

so you can have 12 volts and almost no amps.
so no work can be done...