teotwawki.je
New Member
- Joined
- Feb 9, 2021
- Messages
- 27
We have a "48V" system (14S Lithium Ion) which powers an All-in-one and both 24V & 12V loads via cheap DC-DC converters which are potted in a finned metal case. They work fine but although the 12V one only gets a little warm while in continuous use, the 24V one (for water pumps so mostly doing nothing) gets hot to the touch. We've measured its self-consumption at 5W which is quite an effective heater and annoyingly wasteful of battery power.
As there's only 2 water pumps and 24V is not needed 99% of the time, we're resolving it by buying another one & putting them both down-stream of a water pump switch. So each pump has its own DC-DC converter and they only run when the pump is in use. Solved.
However, I wanted to ask if anyone else has found a high (5W) stand-by consumption on the 48-24V DC-DC converters or do we just have a duff one?
Or does anyone know of a better one, which shuts down completely when there's no load?
Or does anyone know of something like an electronic demand switch which can disconnect the 48V feed to the DC-DC when there's no load on its output?
Thanks.
As there's only 2 water pumps and 24V is not needed 99% of the time, we're resolving it by buying another one & putting them both down-stream of a water pump switch. So each pump has its own DC-DC converter and they only run when the pump is in use. Solved.
However, I wanted to ask if anyone else has found a high (5W) stand-by consumption on the 48-24V DC-DC converters or do we just have a duff one?
Or does anyone know of a better one, which shuts down completely when there's no load?
Or does anyone know of something like an electronic demand switch which can disconnect the 48V feed to the DC-DC when there's no load on its output?
Thanks.