6 volt battery issue question about load
so I have 2 different pairs of 6 volt batteries on my toyhauler. one set from Costco, the golf cart bats, with a date on them of 4/12. they had been sitting in my garage for about a year-year and a ...
Forum Discussion
There are two explanations for sudden voltage drop under load.. Only two.
Either
1: Batteries have developed higher than normal internal resistance (This happens as they get older) =or=
2: Bad connection external to or on the battery (Also very common)
HOW to figure it out.
Get a good digital volt meter, place probes ON THE BATTERY TERMINALS and note the voltage, compare to voltage on Xantrex remote.. Should be identical but if they are not,, Just note difference (As a percentage)
Now apply load.. Again compare voltages.
if you need help with the math post results and I'll figure it out
but if the batteries remain in the 12.6 range while the Xantrex shows 12.0 or less, Connection issues.
If the voltages remain close to the same (NOTE: there is always SOME loss) battery condition.
My chassis battery was replaced either Dec or Jan.. When I took it to the battery store I told him to go ahead and test it (Dang thing would not start the MH any more had to jumper in house batteries (BOOST SWITCH) to get'er done).. I was told the battery tested "Full charge" but, only 50% cranking amps. (IN short, high internal resistance).
One of the standard failure modes.
NOTE: under light load, the battery was perfect.. But under heavy load... Well.
Either
1: Batteries have developed higher than normal internal resistance (This happens as they get older) =or=
2: Bad connection external to or on the battery (Also very common)
HOW to figure it out.
Get a good digital volt meter, place probes ON THE BATTERY TERMINALS and note the voltage, compare to voltage on Xantrex remote.. Should be identical but if they are not,, Just note difference (As a percentage)
Now apply load.. Again compare voltages.
if you need help with the math post results and I'll figure it out
but if the batteries remain in the 12.6 range while the Xantrex shows 12.0 or less, Connection issues.
If the voltages remain close to the same (NOTE: there is always SOME loss) battery condition.
My chassis battery was replaced either Dec or Jan.. When I took it to the battery store I told him to go ahead and test it (Dang thing would not start the MH any more had to jumper in house batteries (BOOST SWITCH) to get'er done).. I was told the battery tested "Full charge" but, only 50% cranking amps. (IN short, high internal resistance).
One of the standard failure modes.
NOTE: under light load, the battery was perfect.. But under heavy load... Well.
