We connected the chargers to a series of multimeters to measure the output when they were exposed to natural sunlight at various times of day, in both overcast and sunny weather conditions. Comes with Cigarette Lighter Adaptor and cable, Battery Clamp Cable, On-board diagnostic connector (OBD-II), Extension Cable 4.5 Maters and Suction Cups. It provides an output of 12 VDC, 270 mAmp DC, 5W max for battery charging which is great for outdoor use, all-terrain vehicles, and off-road motorcycle. The solar charger has an easy, do-it-yourself installation that can be completed in a few minutes.

Orientation is important: the solar charger should be mounted in an unshaded south facing window for best performance. A solar charger will still work in non south facing positions but output will be reduced. Charging Protection, Never get stranded again] The charging cable contains heat-resistant and oxidation-resistant copper wire, which is not easy to break. It has protection circuits such as overcharge/overvoltage/overcurrent/short course, with functions such as overcurrent protection, short circuit protection, reverse connection protection, overheat protection, overvoltage protection, and Undervoltage protection. This charger does come with a cigarette lighter connector, which allows you to connect to the battery in a way that makes reverse polarity less likely. Parameter Do more with Genius - Designed for 6-volt and 12-volt sealed lead-acid automotive, marine, RV, powersport, and deep-cycle batteries, including flooded, gel, AGM, SLA, VRLA and maintenance-free, plus lithium-ion batteries (lifepo4). Solar chargers do not necessarily need direct sunlight to work, but they do need to receive at least some exposure to the sun. These chargers can work on cloudy days for the same reason that you need to apply sunscreen on cloudy summer days: up to 80% of the sun’s UV rays can find their way through cloud cover.

Polycrystalline Panels. Solar panels are not all the same and some definitely do last longer than others. Polycrystalline panels are very good quality and will give you better value as they’re likely to last longer. The best feature in the MEGSUN is the Smart 4-Stage PWM, which is designed to improve efficiency and prolong the life of the battery by preventing overcharging. L ean it against something: many RVers will set their solar panel against something on their roof but really you can lean your solar panel on nearly anything. Just watch out for wind!

The solar panel is waterproof and can be left outside in all weather conditions, however it should be noted that although the panel will work in cloudy conditions, it will not generate power if it is raining.

The most notable feature of this charger is the 3-piece SAE cable that allows you to have multiple choices in terms of charging methods. The 3-piece kit includes alligator clips, cigarette lighter plugs, and an o-ring terminal. Two Charging Way - External battery charger with solar panel can recharge by solar or outlet. Compatible with your iPhone, Samsung, HTC, Nexus, Go-pro Camera, Tablets and other USB devices. More than 1000+ recharge lifecycle. Can’t you just disconnect the battery? Yes, you can indeed disconnect the battery while the RV is sitting, but there’s a good reason not to do this. This is because newer vehicles, including RVs, will lose their settings if you remove the battery, even temporarily. Do You Need Sunlight For A Solar Charger To Work?

The first thing to decide is if the solar panel will be mounted in the car itself or externally somewhere (on the roof of your garage for example).

Final Thoughts

The kit also comes with a 3-stage PWM charging controller that adopts three types of charging called fast charging, upgrade charging, and floating charging. The manufacturer claims that this can generate at least 10-20% more power over a traditional controller. The charger is equipped with an STM 8 microprocessor to prevent overcharging. Parameter Multi-Function - It's a car jump starter, portable power bank, and LED flashlight. Recharge smartphones, tablets, and other USB devices. It's easily rechargeable from any powered USB port in 3 hours at 2.1-amps. Plus, an integrated 100-lumen LED flashlight with seven light modes, including emergency strobe and SOS. Intelligent Protection] The solar panel has a built-in microprocessor. It provides multiple protections. It prevents reverse charging, and it is safely used for charging and maintaining 12V batteries.