Joshbal12
New Member
- Joined
- Dec 9, 2021
- Messages
- 1
Hello from the UK!
Sorry I've done as much research as I can on this without seeking advice:
I've obtained an working scrap 250w panel with the below specs. I've got a 12v battery as bellow and I've been trying to thing of the most efficient and cheapest way of connecting the 2.
As far as I've read I think my kind of panel is unfortunately the type to be directly connected to a grid rather than dc 12v or 24v batteries?
In sunlight, straight across the panel I get about 32V with a multimeter.
I'm unsure whether to step down the panel voltage (with a cheap buck) and increase the amps, then feed into a cheap PWM charge controller which then goes to the battery.
I've also considered this to step it down before going into the PWM :
Or if I should by the cheapest (real) suitable MPPT controller to sort the charging for me.
I'm really on a tight budget so reluctant to spend the £60 + for an MPPT unless it's necessary.
Can anyone recommend a real cheap MPPT for the UK?
Please let me know if I'm being completely ignorant with my set up ideas! I'm still very new to this!
Sorry I've done as much research as I can on this without seeking advice:
I've obtained an working scrap 250w panel with the below specs. I've got a 12v battery as bellow and I've been trying to thing of the most efficient and cheapest way of connecting the 2.
As far as I've read I think my kind of panel is unfortunately the type to be directly connected to a grid rather than dc 12v or 24v batteries?
In sunlight, straight across the panel I get about 32V with a multimeter.
I'm unsure whether to step down the panel voltage (with a cheap buck) and increase the amps, then feed into a cheap PWM charge controller which then goes to the battery.
I've also considered this to step it down before going into the PWM :
28.32US $ 42% OFF|300/400W MPPT Step down Real time Tracking Solar Battery Recharging Controller LED Display 10~30V Output Voltage Adjustable|Solar Controllers| - AliExpress
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a.aliexpress.com
Or if I should by the cheapest (real) suitable MPPT controller to sort the charging for me.
I'm really on a tight budget so reluctant to spend the £60 + for an MPPT unless it's necessary.
Can anyone recommend a real cheap MPPT for the UK?
Please let me know if I'm being completely ignorant with my set up ideas! I'm still very new to this!