Description
- 【 UltraSmart MPPT Technology 】This 12v solar panel battery charger is crafted with SUNER POWER’s unique UltraSmart MPPT technology, so all of its core parts, including its mppt charge controller and solar panel are built using premium and durable materials. The innovative MPPT-Charge-Controller-Technology allows to deliver high tracking efficiency of up to 99% and peak conversion efficiency of 98%, improve approximately 20%-30% utilization rate than other competitors.
- 【Improved 3-stages Charging】The improved 3-Stages charging algorithm (Bulk, Absorption, Float) allows to charge 12-volt battery more effectively, ensures battery is safely recharged and increases battery life and performance. The charging will be cut off when battery is fully charged, and automatically resumed when battery is not full, totally free maintenace.
- 【 Full Safety Protections 】Built-in multiple protections including over-charge, over-discharge, over-voltage, over-current, over-load, short circuit, reverse polarity, and over-temperature, waterproof and spark-proof, the battery is fully protected.
- 【 Three Battery Charging Modes 】Independently charge and control each 12 volt battery with selectable charging modes – including 12V, 12V AGM and 12V Lithium – for all types of lead-acid boat, car, dump trailer, automotive, marine, RV, powersport, camper and deep cycle batteries, including flooded, gel, AGM, SLA, VRLA and maintenance-free, plus lifepo4 lithium batteries.
- 【 Visual Charging Level】The charge level indicators allow to visually monitor the stage of charge among 25%-50%-75%-100%. It’s not just a solar battery trickle charger, it’s an advanced solar battery charger maintainer. A fully-automatic, worry-free smart solar battery charger with zero overcharge.
- 【 Superior Quality and Material】Made of premium Grade A+ solar cells with efficiency up to 21%-30%, tempered solar glass and durable corrosion-resistant aluminum frame, withstand extreme weather conditions like UV, anti-rusting, and erosion, hail, and sandstorm, up to 2400Pa wind pressure and 5400Pa snow load.
- 【 Easy to Use 】Using the most advanced MPPT charge controller chip, this solar trickle battery charger maintainer starts to charge immediately when battery is registered. Pre-dilled holes on frame allows for quick mounting, and all cables are plug and play, offering you easy and quick using experience.
SParker –
I have not plugged in my electric charger since I installed this solar charger on my golf cart. This unit has no trouble keeping up.
Wopsy –
put on my cargo trailer conversion. never need to charge battery or use generator!
Placeholder –
Shipping was a little slow and the panel arrived with shattered glass. The packaging is lacking.
The product worked great even with shattered glass.
They replaced the panel while we continued to use the damaged one. (shipping was still very slow, over a week on both)
The panel itself works great. Recently upgraded our driveway gate battery to lithium for quick charging and overall performance.
This panel has done a fantastic job so far.
Overall, very happy.
Dale P. –
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The Suner Power SP-20W-M PRO solar battery charger with MPPT charge controller is a great little 20W (20V, 1A) charger that works as specified. In bright sun it delivered a little over 1A when connected to my Prius AGM auxiliary battery. We don’t drive much, so I plan to use this charger to top off the battery every month. When I disconnected the charger from my car battery, I could see that the open circuit voltage was about 21v as specified for a second until the unit shut down. I don’t have the test equipment to test the MPPT function. The controller can be set for use with standard 12V batteries, 12V AGM or12V lithium-ion batteries. This includes lifepo4 batteries, but all lithium batteries must have a built-in battery management system). The charge controller has LED indicators for reverse connection and State of Charge, The unit came with nice long leads and two options for connecting to a battery. The 4 page User Manual was complete, although some of the wording was “broken” English and required a little interpretation on my part. It includes a basic testing procedure for those who might not know how to do it. I’ve only run this for a couple hours so I can’t comment on reliability. The manual states the unit comes with an “extended 12 months warranty”. Support is by email and they claim 12 hour response.
Dale P. –
Would recommend it
Timothy –
This is a 50-watt panel, but it takes a lot of direct sunlight to create the full 50 watts. Regardless, I am pleased with the panel and the wattage it creates. It came with two different wiring harnesses. But I wish they would have included a cigarette lighter-type plug-in harness.
Wopsy –
Easy to install easy to use
SParker –
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This solar charger works great to keep the battery on the boat chargeds up when not in use. I really like that it shows you how much charge the battery has.