RangeyRover
New Member
Hi All,
I've successfully setup my AC200MAX for 700w DC-DC charging for about $150 USD.
In my case it's from a 12V 560Ah Battery bank on my RV, but this is relevant to vehicles too, probably more so, I'm going to do the same in my car so when I leave the RV I'm topping up the AC200MAX when touring.
Setup in the RV is a bit simpler. I've measured the idle current of the WG-12S4820M DC-DC and it's not worth any complex isolating, less than 1w.
This is all mounted externally.
Protected the battery with a waterproof 100A CB.
WG-12S4820M is IP67 waterproof and aircooled, it's mounted externally too.
48V lines are protected with a simple 20A midi fuse.
I've tested it in use with the AC200 Max running my RV aircon, about a 1.3KW load starting from full with a 700w input from the WG-12S4820M DC-DC.
I can get about 5 hours of Aircon, when it stabilises the temperature and starts to draw less.
WG-12S4820M DC-DC draws approx 58A at 12.8V, and gets warm to hot.
It can definitely handle the load and stay passively air cooled in 100f/36c degree heat
AC200Max takes 14.75A consistently, with the WG-12S4820M DC-DC at 48.05V
Cabling is important, bluetti pv cabling gives quite the loss around 11W, and cables run warm, but not hot when using the solar connectors as an interface, I've got an aviation connector coming to make my own cable to get those losses down.
2AWG is around 4w loss.
Self usage on the WG-12S4820M is around 25w.
Total conversion power cost around 40W, AC200Max says 707w in, Battery BMS says 755w out, so more or less correlates, and I cant measure battery internal losses.
I'm very pleased with the setup, recharging the AC200MAX from 0 takes about a 3rd of my RV battery.
Links for the DC-DC below.
www.wengaoelec.com
I've successfully setup my AC200MAX for 700w DC-DC charging for about $150 USD.
In my case it's from a 12V 560Ah Battery bank on my RV, but this is relevant to vehicles too, probably more so, I'm going to do the same in my car so when I leave the RV I'm topping up the AC200MAX when touring.
Setup in the RV is a bit simpler. I've measured the idle current of the WG-12S4820M DC-DC and it's not worth any complex isolating, less than 1w.This is all mounted externally.
Protected the battery with a waterproof 100A CB.
WG-12S4820M is IP67 waterproof and aircooled, it's mounted externally too.
48V lines are protected with a simple 20A midi fuse.
I've tested it in use with the AC200 Max running my RV aircon, about a 1.3KW load starting from full with a 700w input from the WG-12S4820M DC-DC.
I can get about 5 hours of Aircon, when it stabilises the temperature and starts to draw less.
WG-12S4820M DC-DC draws approx 58A at 12.8V, and gets warm to hot.
It can definitely handle the load and stay passively air cooled in 100f/36c degree heat
AC200Max takes 14.75A consistently, with the WG-12S4820M DC-DC at 48.05V
Cabling is important, bluetti pv cabling gives quite the loss around 11W, and cables run warm, but not hot when using the solar connectors as an interface, I've got an aviation connector coming to make my own cable to get those losses down.
2AWG is around 4w loss.
Self usage on the WG-12S4820M is around 25w.
Total conversion power cost around 40W, AC200Max says 707w in, Battery BMS says 755w out, so more or less correlates, and I cant measure battery internal losses.
I'm very pleased with the setup, recharging the AC200MAX from 0 takes about a 3rd of my RV battery.
Links for the DC-DC below.
DC to DC Converter & Charger, Waterproof Lithium Battery Charger, Power Supply
Shenzhen Wengao Electronic Co., Ltd. is committed to being a leading provider of power solutions. We design and manufacture AC-DC power suppliers, DC-DC converters, battery charger system and high voltage power supplies for global customers.
www.wengaoelec.com
