Load test on batteries

[ThreeCW]

Originally Posted by Godfather1960

so the batteries look good for 4 years old sitting most of their life your thoughts

If your 50.4 volts battery pack voltage is a stabilized reading (allowed to stabilize for 12 to 24 hrs after charging + the charger being disconnected), then your batteries are NOT receiving (or able to receive) a full charge. As per the attached state of charge chart, your batteries are at just under a a 90% state of charge.

A fully charged battery pack should read approx. 50.9 volts (depending on make and model of batteries). As an example, my fully charged and stabilized Trojan T-125's have a 52.0 v pack voltage.

If your batteries sat for 4 years and were well maintained ... charged frequently and watered as required ... then the batteries should not see much damage and should be able to hold a full charge (100% on the chart).

If the battery pack sat for 4 years and was allowed to self-discharge to below 80% state of charge (or so) and allowed to stay in a discharged state for even short periods of time, then permanent sulfation of the cells is possible, which would limit the amount of charge that the batteries would accept.

A well maintained battery pack can last some users 5 years or more.

A poorly maintained battery pack can fail in as little as a year or even less.

If you battery charger has an equalization mode, you may be able to equalize your batteries with the aim of reducing some of the sulfation and regaining some capacity.

Have a read of the attached Trojan Battery Guide for the manufacturers maintenance recommendations.

Also check out this 'sticky" for more battery care recommendations: https://www.buggiesgonewild.com/showthread.php?t=81161

[Godfather1960]

Originally Posted by ThreeCW

If your 50.4 volts battery pack voltage is a stabilized reading (allowed to stabilize for 12 to 24 hrs after charging + the charger being disconnected), then your batteries are NOT receiving (or able to receive) a full charge. As per the attached state of charge chart, your batteries are at just under a a 90% state of charge.

A fully charged battery pack should read approx. 50.9 volts (depending on make and model of batteries). As an example, my fully charged and stabilized Trojan T-125's have a 52.0 v pack voltage.

If your batteries sat for 4 years and were well maintained ... charged frequently and watered as required ... then the batteries should not see much damage and should be able to hold a full charge (100% on the chart).

If the battery pack sat for 4 years and was allowed to self-discharge to below 80% state of charge (or so) and allowed to stay in a discharged state for even short periods of time, then permanent sulfation of the cells is possible, which would limit the amount of charge that the batteries would accept.

A well maintained battery pack can last some users 5 years or more.

A poorly maintained battery pack can fail in as little as a year or even less.

If you battery charger has an equalization mode, you may be able to equalize your batteries with the aim of reducing some of the sulfation and regaining some capacity.

Have a read of the attached Trojan Battery Guide for the manufacturers maintenance recommendations.

Also check out this 'sticky" for more battery care recommendations: https://www.buggiesgonewild.com/showthread.php?t=81161

Great thanks so much for the info i did charge it yesterday afternoon let is fully charge till 6pm so i just tested it at 8am this morning and still got the 50.4 reading i think thats very good for batteries built in C6 (2016) March

[mrgolf]

Go with them until the run time gets too short for your use.

[Godfather1960]

I figure it should last for a while as long as i keep up on it