pianotuna wrote:
Gdetrailer, ty.
The battery I hope to maintain is pretty tiny. I think 7 to 10 amp-hours and AGM.
The manual and the website give conflicting information.
Web site says 4 amps.
Manual says:
Battery Data Chart• 12 VOLT• Maximum charge current must be limited to 1.2 amps•
Piano,
You have your answer, 4A charge is most likely going to be too much for the battery you are wanting to charge.
However, keep in mind that would be 4A IF the battery has been deeply discharged, fully charged battery, should not be much of an issue.
Now in reality, with the small battery and small drain, a DC-DC charger is way overkill.
Just allow the small battery to be charged by the tow vehicle, that IS how it is done with most utility trailers.
My 18ft flatbed utility trailer breakaway system has a 5Ahr AGM in a small box, the tow vehicle recharges that battery when driving.
I also have a 15V DC 5A switching power supply (not a charger)that I plug in when at home and not towing..
