Page Comparison

Who
- Daniel Puratich idea
- Tim Gu looking into it
What
- Take in 12V and output 24V
- For powering our 24V battery charger
  - would be massive help at comp and flight tests to be able to charge faster
- Supply enough power for the charger
  - if the current is really high then this project is going to be waaay out of our skill range
Why
- We have 12V server PSUs that are CSA approved
- We get more power capability out of the charger at 24V
- we could also just buy this? not sure if it maths out.

Details

Battery charger: HotA F6 Quad Battery Charger (4 x 15 A)

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At +12V, maximum load is 40 A, so this can supply 480 W of power.
- If we want to charge as fast as possible we will need a convertor rated for 480 W

Assuming our boost groundside convertor supplies 24V DC to the chargersteps up 12V to 24V, with a power limit of 480 W:
- If we charge 4 batteries at once, the current will max out at 10.4 5 A per channel (each channel is 250 120 W / 24V)
- Alternatively we could just not use max power, and just charge 2 batteries at once with lower power/current.

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COTS options:

AliExpress seems to have the most amount of options and is well priced (but might be a bit sketchy?)
I initially added higher power options here, but based on the maximum PSU load we may not need more than a 480 W convertor

Product

Price

Specs

Notes/Features

Datasheet

Szwengao WG-12S2450M12S2420M