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. Even a small solar charger will help with battery maintenance, and basically the bigger (higher wattage) the solar charger the more charge you will get to your battery. The 5W solar panel is waterproof and has a temperature compensation that’s a built-in sensor to keep everything perfect. Pros & Benefits:

It has a built-in super smart charging controller with a three-step micro-controller for precise charging that makes sure your battery isn’t being damaged or overcharged.Added with an 18-month warranty on their solar car battery charger, you can’t go wrong with this product. Pros & Benefits:

SIMPLE & SAFE: Low maintenance, easy-to-use, universal battery charger is just 3.3 x 1.3 x 2.4 inches, 1 lb (charger only). Spark-proof circuitry ensures no-spark connections, and automatic reversed hook-up detection verifies correct connection

Are Solar Trickle Chargers Worth It?

It comes with a long cord, multiple connections and suction cups, making it simple and easy to install. This solar charger uses a 1.5W amorphous solar panel that works on cloudy days and comes with a 12-Month Warranty. Pros & Benefits: When the voltage reaches about 14.2V, the green indicator light will light up to indicate that the charging is complete. Safety for Use - Made of eco-friendly silicone rubber and ABS PC material. CE, FCC, RoHS certified, reliable and durable. Solar charging is a charging way for emergency use, and solar panel charging efficiency will be influenced by natural conditions and random factors, such as day and night, season winter and summer, sunny, cloudy, rainy, and so on, so it may take a long time to be charged. Restore your Battery, Don't let a dead battery ruin your plans] Built-in advanced battery REPAIR mode to help to recover old/idle batteries and extend battery life. Please use repair mode if the car battery charger cannot charge the battery. The high-frequency and low-frequency pulse technology has good repair and activation effects. Note: It can not activate a dead battery or repair a damaged battery. LITHIUM BATTERIES ARE NOT ALLOWED

The Battery Tender Solar chargers can be used in temperatures ranging from 120 degrees down to 20 degrees below zero Fahrenheit, making it the best solar charger for places with extreme weather. Going on Holiday and need to Park your Car for Weeks? or Need to Store Your Motorhome over Winter time, Our Solar Powered Car Battery Charger ensures Your Battery Never goes Flat !!! The SUNAPEX Solar Charger & Maintainer is designed to be more efficient, thanks to a special honeycomb structure. This is another solar charger that has a three-color LED indicator. This lets you know when the battery is receiving sunlight and when the battery is fully charged. The built-in charge controller provides overcharge protection, overvoltage protection, short circuit protection, etc. Schumacher is known for its efforts to reduce eco-footprints by actively expanding the use of recycled and recovered components, materials, and parts in its manufacturing process.Comes with Cigarette Lighter Adaptor and cable, Battery Clamp Cable, On-board diagnostic connector (OBD-II), Extension Cable 4.5 Maters and Suction Cups. You can also directly connect the solar charger to the battery using the multiple cable end options and battery clamps provided. 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. 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.

Points were also awarded for ease of connection, features such as USB outlets, and overall value. Solar: Plan ahead When using the battery clamps, please observe the correct polarity and ensure you connect to correct battery terminals. Solar Battery Charger - put together ourselves for the needs of motorcycles but just as good for classic cars as well - 5W solar panel big enough for year around maintenance charging of batteries up to 50Ahcapcity if solar panel can be well positioned (unshaded, South facing) outside - includes charge controller. For normal 12V car battery maintenance I would suggest you buy as large a solar charger as you can justify (I would wouldn't I?!) particularly if there are battery drain problems. If you exceedthe ratio of 10W of solar power to 100Ah of battery capacity a charge controller is required but you don't need to worry as our 5W Solar Charger and OptiMate Solar Panels all come with a charge controller as standard.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. We returned two weeks later, made sure to unplug it all before we started the car and it worked perfectly. The car started first time and our battery seemed to be fully charged. This was in late summer though and there had been decent weather in the time we were away. Charging Visualization] The indicator lights of the solar charger help you better distinguish the usage status of the solar charger. The best option is often to have a solar charger / small solar panel mounted externally, often on the roof of your garage. Mounting outside will ensure you get the best from your solar panel, but for maximum output is still ideal to position in an unshaded south facing position if possible. This solar panel does come with two connectors and alligator clips, but it does not appear to come with the 3-piece SAE cable that some other charging kits do come with. This offers a little less flexibility when it comes to connections. Best Features