Charging ZERO BREEZE Mark 3 Battery While Driving – Alternatives to 48V Booster?

Q&A and troubleshooting
, ,
1

Hi everyone,

I’m planning to get the ZERO BREEZE Mark 3 AC for the next season and have a question regarding how best to charge it while driving, using a standard 65A alternator.

ZERO BREEZE offers a 48V booster for charging, but since it can draw up to 50A on the input side, that’s not really an option with my 65A alternator.

I’m wondering if it might be possible to use a Victron 12/24-10 instead, supplying 24V instead of 48V. I assume the input current would be <30A in that case, which would be more manageable.

Here are the specs of the ZERO BREEZE battery:

  • Battery Type: 21700 Lithium-Ion Polymer

  • Capacity: 1022Wh

  • DC Charge Input Voltage: 12V–60V

  • Charging Current Limit: 10A

  • Charge Time (0–80%): ~2 hours (with official adapter)

  • Output Voltage: 42V–58.8V

  • Charging While Discharging: Supported

  • Other Outputs: 12V/10A Anderson, USB-C PD (100W), USB-A QC 3.0 (18W)

  • Chainable: Yes (2, 3, 4+ batteries)

Would this setup with the Victron 12/24-10 be feasible?
Also, does anyone know the actual input current draw of the 12/24-10?

Thanks in advance and best regards!

2

image
image688×115 18.1 KB

Seems like their internal charger has a very wide input range. However, the max input current may vary with voltage, or may be fixed at 50A (max).

So using the 12/24V dc/dc converter should work as a current limiter. Not sure but I think that you can also use VE connect to limit the output current to a custom value. Input current will be approx twice the output current, plus a small increase for inefficiency.

1 Like