Is this unit full mppt, both for charging and the load? (i have noticed cheaper brands charge with pwm)

The GV-5 (as all the Genasun charge controllers) is a "real" MPPT with a tracking speed of 15 times per sec and a tracking efficiency of 99%.

Is it waterproof? Or water resistant? I will be mounting outside.

It is not waterproof. The board has a conformal coating against dust and moisture but the GV-5 has to be installed in a place protected by water. It is also highly recommended a drip loop.

Is it possible to hook up a 12v power supply to the panel side to charge a battery indoors?

Not 12v. A "12v" solar panel typically puts out anywhere from 16 to 20v and a "12v" lead acids battery's float voltage is about 13.8 but will get charged even higher during a full cycle. You could charge this indoors but I would say you would need to supply something between 14.5 and 20v.

Will this product perform well on gel-type marine batteries ?

We have only used these with flooded type marine deep cycle batteries; no issues in this case so far. According to the manufacturer's brochure, the Lead-Acid version should work with "AGM/Sealed/Flooded/Gel" types, but I recommend double-checking directly with their customer support to be on the safe side for your application.

Gv 5 Pb 12v | Desertcart UNITED STATES

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Description

Harness the Sun's Power! ☀️

SAFETY FIRST - Advanced electronic protections ensure your system's longevity.
BUILT TO LAST - Enjoy peace of mind with a 10-Year Warranty, proudly made in the USA.
SMART CHARGING - Multi-stage charge profile tailored for Lead-Acid batteries.
UNLEASH SOLAR POWER - Maximize your energy with 65 W panel capacity!
EFFICIENCY REDEFINED - Experience 99.85% peak efficiency for optimal performance.

The Genasun GV-5-Pb-12V is a high-performance MPPT solar charge controller designed for 12 V lead-acid batteries. With a maximum recommended panel power of 65 W and a charging current of 5 A, it features a multi-stage charge profile for optimal battery health. Its impressive 99.85% peak efficiency and low night consumption of just 0.125 mA make it a standout choice for solar energy enthusiasts. Equipped with a low voltage disconnect (LVD) and advanced electronic protections, this controller ensures safety and reliability. Backed by a 10-year warranty and compliant with CE, FCC, and RoHS standards, it's a smart investment for sustainable energy solutions.

Reviews

L**S

Came in exactly as described

Needed a new one of these very quickly and this came in within a couple of days. Easy install and worked immediately on install. Very high quality and will order again as needed.

14.02.2024

S**T

Great product

Small compact design suiting the small install location. Product has easy instruction and safely arrived without damage.

2.12.2020

I**.

Super efficient, easy intall, Made in USA

Absolutely the best MPPT solar charge controllers you can buy, I hope they expand their offerings to larger systems. I use then to keep my tractor battery topped off and our entry gate. Great customer service and made in USA.

6.05.2025

R**K

... put this on our pontoon boat and it works wonderfully we don't have to pull the battery to charge ...

My husband put this on our pontoon boat and it works wonderfully we don't have to pull the battery to charge and do not have to have a back up system in place.

26.07.2017

B**D

Fast service.

Product delivered as promised. Works great. Happy with the item.

27.01.2020

S**E

Works great for my solar battery charging application

Compact and designed for my exact marine battery charging application.

14.12.2018

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