This is a 30-amp rated (I would trust 20) DC to DC booster from DROK
It costs $22.00 on AMAZON
Someone on this forum remarked his used them in parallel successfully. Who was that?
For $66.00 there's a SAFE 60-amp charge rate. There is a DROPOUT point at which I suspect is in the 10 volt on the supply side range. Moot point.
When using a booster having an AGM battery on the supply side might be a good idea. These critters need ventilation and they need to be shut off with a key ignition switch connection.
For the price difference, I'll go my route any time.
