DC to DC Charger 12V 20A - Multi-Stage Charger for LiFePO4, AGM, Gel, Flooded Batteries | Car, RV, Marine & Boat Battery Charger with Bluetooth Compatibility

Read some bad reviews on this but have ran Renogy DC/DC for years (get new ones when I upgrade or change vehicles) and never had one problem.

Works good, also got the BL2 bluetooth interface (cool that they give you a lower price option in case you don't need BT). The instructions are good (Made in USA), app works good, the until has lots of charge profiles and even current limiting. My only disappointment was that you can only choose from 10A increments for the current limiter. We get 10, 20, 30 and 40 and well I need 25... ohh well

Charger works as advertised but there is a much larger than anticipated parasitic load when not charging. I estimate it to be about 1 amp. Drained a 100Ah AGM dual purpose battery from 12.7 to 12.0V in ~48 hours. Anyone else experiencing this? Is there a fix (softwear or otherwise)? This charger isn't useful for marine applications where there are often days to weeks between motor use with this magnitude parasitic load.

Following the manufacturer’s instructions the installation went smoothly. The 20amp upgraded charger operates at spec to charge the 100ah lifepo4 house battery from the 100ah agm start battery. I was surprised at how little heat it generated. At 94% efficiency, it barely gets warm after several hours of charging. Initial reaction is positive.

Works for a van conversion charging set up with Lithium battery