Newpowa
20W Solar Panel Car Battery Maintainer
Historical Reference
This product is included for historical comparison and is not currently recommended for purchase.
Lightweight at 1.64 lbs. Poor solar production at only 3.35 watts in overcast, 14 watts in sunny conditions. Failed float charge test - overcharged battery. Has 8 suction cups for installation.
View on AmazonReviews (1)
I Had No Idea These Were So Good!
Project Farm
Jan 18, 2026
Ranked #11
3.0
"Lightweight at 1.64 lbs. Poor solar production at only 3.35 watts in overcast, 14 watts in sunny conditions. Failed float charge test - overcharged battery. Has 8 suction cups for installation."