Eco-Worthy MPPT and Solar30 PWM Test
Did a quick backyard test of my two solar controllers using the actual trailer wiring etc as intended for camping with solar later this month. Got some blue sky, no clouds. The Eco-W on the 230w p...
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So I did some measuring with the Solar 30 on my folding 120W mono panel Solar Blvd special. I had it hooked up to one of my Trojan T-1275s, and stock settings for the voltage were 14.4V. The T1275 was topped off at 100% at the start, and I pulled maybe 8 to 10amps off of it, total, running the TV, lights and fridge for about 1.5 hours.
I was able to see 6.2 amps, but did have some clouds in the sky, not obstructing the direct sun light, but not a pure sunshine day here at 34N. I disconnected the battery from the trailer, and changed the bulk set voltage to 14.8... and never saw over 14.92V going into the battery on my meter. Amps, of course, dropped down to 2.5 on down to .32 amps at 14.92V pulse charges. Much bigger amps at 14.75.
I think I need to get that T-1275 at 150 amps, down a bit lower to see what the panel is truly capable of.
One thing for certain... the charge controller will sure push a lot more amps at a 14.8V setting getting all the way up there, than it will with a 14.4V setting. Something the Trojan T-1275 will handle, with ease, at such low amperage. Probably would work as well on a 24DC, to get close to a 100% charge.
Programmable voltage PWM charge controllers are a nice feature, if you truly understand your battery banks charging needs. I believe a little higher voltage helps when you're short on amps with a smaller wattage solar panel. Higher voltage seems to keep on driving the amps in for a longer period of time.
I was able to see 6.2 amps, but did have some clouds in the sky, not obstructing the direct sun light, but not a pure sunshine day here at 34N. I disconnected the battery from the trailer, and changed the bulk set voltage to 14.8... and never saw over 14.92V going into the battery on my meter. Amps, of course, dropped down to 2.5 on down to .32 amps at 14.92V pulse charges. Much bigger amps at 14.75.
I think I need to get that T-1275 at 150 amps, down a bit lower to see what the panel is truly capable of.
One thing for certain... the charge controller will sure push a lot more amps at a 14.8V setting getting all the way up there, than it will with a 14.4V setting. Something the Trojan T-1275 will handle, with ease, at such low amperage. Probably would work as well on a 24DC, to get close to a 100% charge.
Programmable voltage PWM charge controllers are a nice feature, if you truly understand your battery banks charging needs. I believe a little higher voltage helps when you're short on amps with a smaller wattage solar panel. Higher voltage seems to keep on driving the amps in for a longer period of time.
