DavidAnderman
New Member
- Joined
- May 1, 2020
- Messages
- 36
There are actually two flavors of them, cheap and cheaper. The cheaper ones are smaller, and go for $10 or so.
No, they don’t have MPPT capability.
The big ones claim to have 100 amp capability for some models.
it would be nice to know the name of the manufacturer to be able to call them something other than “cheap blue”. Is there a model number?
I have purchased a few of these. One failed spectacularly; perhaps I connected it to too many panels or too high a voltage. Another simply stopped working after a few days. Those were the larger ones, the small ones seem okay, but I am testing that does not charge a battery. Even though there is no load, 5he battery voltage never goes up, it just goes down, slowly.
why do I buy these cheap controllers? Sometimes I will set up a panel and battery in the field, maybe to pump some water or run a fan, and I need a cheap, low capacity 12v controller.
No, they don’t have MPPT capability.
The big ones claim to have 100 amp capability for some models.
it would be nice to know the name of the manufacturer to be able to call them something other than “cheap blue”. Is there a model number?
I have purchased a few of these. One failed spectacularly; perhaps I connected it to too many panels or too high a voltage. Another simply stopped working after a few days. Those were the larger ones, the small ones seem okay, but I am testing that does not charge a battery. Even though there is no load, 5he battery voltage never goes up, it just goes down, slowly.
why do I buy these cheap controllers? Sometimes I will set up a panel and battery in the field, maybe to pump some water or run a fan, and I need a cheap, low capacity 12v controller.