It primarily depends on how fast you want to charge the battery. The climate wherever you operate can also be a factor in that you need enough sunlight to capture energy. A lot of cloudy days translates to a slower charge rate. Your operating time is of course a consideration, as is the transmit to receive time ratio.
Then theres the budget along with what physical dimensions youre willing to work with.
??? My system is on the modest side with a 30 watt panel, 7 ah sla,? and a Tractor Supply controller. I might benefit some with a 12 ah battery such as yours, and in that case id want at least a 50 watt panel. My 30 watt panel puts out 1.8 amps in full sun. A 50 watt panel should thus be capable of ~ 3 amps unless theres been a significant change in manufacturing process, in which case it might put out more. Upsizing anything in your system cant hurt, electrically speaking alone. It all has a price tag in terms of your pocket depth and how portable you want to be however.
?? Let us know what you wind up with and how its doing. JMHO, YMMV, FWIW, etc.
Best,
Sonny n1khb
On Wednesday, April 17, 2019 Tom Vaughan twvaughan <FT817@...> wrote:
?
I was wondering what kind of solar charger everyone uses for Bioenno batteries. I am considering a 12A battery and would like to charge it using solar power during field operations.
Thanks,?
Tom
