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Pros & Cons
Pros
W solar battery charger / maintainer. Connects to two 20watt solar panels from harbor freight. Protects the battery from overcharging.
I have 2 of these now and both work excellent. Worked fantastic with the 4.
Use a multi meter to determine the cable polarity of the panel. The sae on my panel needs to flipflop so picture 3 also shows the new connections with blue wire connectors. Use circuit tester to check polarity.
Cons
Charge controller is trash and so is the battery it drained.
Highlights
Quality
I'm so happy i bought this with the solar charger.
Works great on the project he is working on.
I purchased the schumacher spc-7a 12 volt solar charge controller to use with the schumacher sp-400 4.
Competitiveness
I charge 2 12 volt battery’s using solar panel and renogy charge controller.
Overview
- How are reviewers describing this item?
solar, positive, negative, great and red. - Our engine has profiled the reviewer patterns and has determined that there is minimal deception involved.
- Our engine has determined that the review content quality is high and informative.
- Our engine has detected that Amazon has altered, modified or removed reviews from this listing. We approximate total reviews altered up to 1.
- Our engine has discovered that over 80% high quality reviews are present.
- This product had a total of 548 reviews as of our last analysis date on Feb 9 2023.
Helpful InsightsBETA
Posted by a reviewer on Amazon
The real culprit is the cable polarity of the solar panel
Posted by a reviewer on Amazon
To explain first we need to clarify red wire does not mean that it must be positive rather if it connects negative on the circuit it can be negative
Posted by a reviewer on Amazon
On my unit all red wires connect to on the charge regulator
Posted by a reviewer on Amazon
Second same idea applies to the sae connector i call them black black plastic and silver silver metal the naked end either one can be positive or negative depending on where it connects
Posted by a reviewer on Amazon
That said since the solar panel is energy giving its cable polarity will determine the polarity of all the cables downstream
Posted by a reviewer on Amazon
Picture 1 shows positive voltage and picture 2 indicates negative voltage minus sign under dc when i reverse the leads
Posted by a reviewer on Amazon
Picture 3 shows wires are properly labeled as positive vs negative
Posted by a reviewer on Amazon
Second be sure when solar panels sae connects to the sae of the charge regular positive wire must attach to the positive in the regulator circuit
Review Count History
Price History
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