Misread Trojan Battery Manual

Well there have been many a general rule recommendation here that 1 Solar watt per 1 A/h of capacity and that is only about a 5% rate. This PDF trojan is recommending twice that.

Their plug in charger's recommendation is 10 to 13% of the 20 hour capacity.

Any solar is better than no solar, but is 5% enough to "maximize your battery life"

I Wonder how much of a difference it makes in the long run.

landyacht318 wrote:
I've not seen this particular Link before.
I like the "tips on how to maximize your battery life" at the bottom:

As a general rule of thumb, the total amps from your PV panels should be sized between 10% and 20% of the total amp-hours (Ah) of the battery pack.

I deliberately lowered my battery capacity so that my solar can just barely reach 10%.
198 watts for a 130 A/h battery

I've taken some minor grief here and there on this forum for employing this strategy.

So a 210 amp 6v pair of GC-2's should get between 21 and 42 amp/hours capacity from the solar panels, for the day, if I am reading that correctly? I get 6.5 to 7 amps/hour at as close to 15.0V as I can for a Trojan T -1275... and 50% of a 150 amp hr battery is 75 amps to be replaced max, per day. No way I am going to get that kind of output come short days of winter and the sun low on the horizon. Summer time, yes.

landyacht318 wrote:
I've not seen this particular Link before.

It gives the same info on the individual battery data sheets too so no typo.

I've taken some minor grief here and there on this forum for employing this strategy.

It's working though and some people had come to this conclusion in some previous threads if I remember correctly.

I've not seen this particular Link before.
I like the "tips on how to maximize your battery life" at the bottom:

As a general rule of thumb, the total amps from your PV panels should be sized between 10% and 20% of the total amp-hours (Ah) of the battery pack.

I deliberately lowered my battery capacity so that my solar can just barely reach 10%.
198 watts for a 130 A/h battery

I've taken some minor grief here and there on this forum for employing this strategy.