Customer Reviews for VEVOR 30W 12V Solar Panel Battery Charger, Solar Battery Trickle Charger Maintainer with Built-in Smart Controller & 3 Connection Cables, IP67 Waterproof Portable for RV Car Motorcycle Boat Van Camper

The 20w and 30w solar panels are perfect for charging my trolling motor and boat motor batteries. They are the perfect size any easily tucked away when not in use.

Unsure about how long this polymer sheets PV panel will last, metal frame and glass surely will last longer but will be heavier etc. The back white box is unnecessarily big and thick , wish it were thinner at least since it sticks out. What you need to know is there is a blocking diode so when not generating , it is not discharging the battery either, some cheap ones (including supposedly battery charging PV, dont have diode so it discharges battery and PV gets hot too, no good). the sealed extension is very convenient as well as several option from clamps to just terminal etc is very handy , the 12V cigarette lighter socket, you need to use with caution since it is low current but higher than 12V so small electronics will get fried if you connect to it. overall I am happy with purchase since light and small . It is similar physical size to a 10W monocrystaline PV I had before, but this charges must faster so I believe it is close to 20W, it charges so fast that I needed to connect a charge controller, since it was overcharging the battery, little current but high that 12.8V no good for battery and electronics, even though car's charging system can get up to 14V if needed but no good for battery's health. Remember to get a charge controller for small battery or planning to leave the PV connected all the time

Seems to work well on my Cart, only use the cart every couple of weeks

Funktioniert, die Batterie wird aufgeladen, schade nur dass nicht beschrieben ist ob und wie geregelt wird wegen Überladung usw. könnte mehr Informationen geben.

The panel easily achieves its rated voltage (15 V DC) under overcast conditions. This is much better performance than several of my other panels.

Works great !!!

The size is perfect for me. There is full advertised solar output in full sun. The extra accessories were "nice to haves" but I doubt I will use most of them The only real disappointment is the wire gauge used. Sure, it is large enough to carry the current but, it could either be larger or protected with an external cover. As it is, it looks very frail and I expect the wire will be broken after only a few uses.

Direi molto utile, fa il suo lavoro di mantenimento della carica batteria...unico neo, non è di facile stipaggio, essendo ingombrante. Forse è meglio una delle versioni ripiegabili.

Light and good but pay attention to the 12V auto plug, it has reversed polarity so you need to change it if you want to use it - open it up and solder the red wire to the middle and the black one to the sides.

Good value, work great.