Recently the output from controller has been over 16 volts. Hooked up to two 100 watt panels. Is this unit bad? Don't want to damage my batteries.

UNREGULATED 16 Volt DC can damage a battery but a working controller should prevent this. You can check the output of the controller and see what the voltage is. Should be no more than 15 Volts DC at most ... if it's higher, you have a problem that should be corrected. You may have a higher voltage directly off the panel without the controller. Mine in bright sunlight can get as high as 20 Volts DC. Again ... a working controller should prevent you from frying your battery. Just make sure it's working before hooking up the battery!

I have two 100watt hqst panels that are 5.8amps. i can’t put these in parallel can i?

I wouldn't do that. I would get a controller that could handle12 amps like a 20 amp or at least 15 amps. If you exceed the rated capacity then it may damage the unit or cause malfunction. They make higher capacity controllers at Renogy for a little more cost. I only have one 50 watts panel to keep a battery topped off which is around 2.85 amps.

I have a single renogy 100w 12v poly/ mono solar panel. is it possible to use this panel/controller combo to charge 2 12v batteries in series?

It should work with your setup since it automatically detects 12 or 24 volts. One thing That might be a problem is the 12v panel voltage. You may need a higher voltage panel or put two panels in series. It should be easy to do a quick mock up on the ground and check it out. Also, my advice is worth exactly what you are paying for it.

Can I hook up a 24 volt solar panel and charge a 12 volt battery?

Thank you for contacting Renogy, The 10-amp Wanderer can accept up to 50-Volts D/C. However, please note that it can only accept 100-watts of solar input when charging a 12-volt battery bank.

Renogy Wanderer | Desertcart Austria

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€ 45.93

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Sold byAmazon AustriaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔌 Power your freedom with smart solar control!

INSTANT SYSTEM INSIGHTS - Clear LCD screen and LED indicators provide real-time charging status, customizable parameters, and error alerts.
COMPACT DURABLE DESIGN - Sleek aluminum housing fits anywhere and withstands tough conditions for reliable off-grid power management.
MAXIMIZED BATTERY LONGEVITY - Smart 4-stage PWM charging extends battery life with Bulk, Boost, Float, and Equalization modes.
SEAMLESS VOLTAGE ADAPTATION - Automatically detects and optimizes for 12V or 24V DC systems, ensuring hassle-free setup.
UNIVERSAL BATTERY COMPATIBILITY - Supports AGM, Gel, Flooded, and Lithium batteries, making it perfect for diverse solar setups.

The Renogy Wanderer is a compact, cost-effective PWM solar charge controller designed for 12V and 24V systems. Featuring smart 4-stage charging, real-time LCD monitoring, and broad battery compatibility—including lithium options—it ensures efficient, safe, and long-lasting battery performance. Its rugged build and user-friendly interface make it the go-to choice for millennial professionals seeking reliable off-grid energy solutions without breaking the bank.

Specifications

ASIN	B07NPDWZJ7
Brand	Renogy
Brand Name	Renogy
Color	black
Colour	black
Customer Reviews	4.3 out of 5 stars 3,055 Reviews
Display Type	LCD
Global Trade Identification Number	00816360029953
Included Components	Wanderer 10A solar charge controller
Item Dimensions L x W x H	11.9L x 7.5W x 2.8H centimeters
Item Type Name	Compact Design w/ LCD Display for AGM, Gel, Flooded and Lithium Battery, Wanderer 10A
Item Weight	0.27 Pounds
Item weight	0.27 Pounds
Manufacturer	Renogy
Material	Gel
Material Type	Gel
Model	Wanderer 10 Amp 12V/24V
Operating Temperature	40 Degrees Celsius
Part Number	Wanderer 10A
Product dimensions	11.9L x 7.5W x 2.8H centimeters
UPC	816360029953
Voltage	24 Volts

Reviews

C**E

Excelente calidad, garantía y modernos.

Son cargadores solares de excelente calidad y modernos, vienen hasta con número de serie, funcionan muy bien con batería LiFePO4 y además vienen con la función de TIMER, los recomiendo ampliamente para cualquier tipo de proyecto fotovoltaico de iluminación.

28.01.2026

F**N

Poor quality

Display packed up after less than a year. I only used it once.

3.05.2026

K**N

Great product

Has been working perfectly for several months now and have no complaints. Seller service is excellent and delivery is quick

26.02.2026

A**X

Better than the cheap rebranded PWM controllers.

Far better than any of the cheap junk off brand PWM controllers I've used that break and don't work correctly. This Renogy PWM controller works flawlessly compared to the tons of junk PWM controllers on the market. It is actually a 10 Amp controller, and actually charges and floats batteries correctly. And actually has a website and support and a real company that provides documentation. It properly uses solar panel power to charge flooded lead acid batteries up to 13.8V, and floats them at 13.8V. At high noon it regulates my 21v solar input perfectly. The voltage display is accurate enough, plus or minus a tenth or two of a volt. Only downside/drawback is the battery low voltage cutoff for the load connection. It's set to 10.8V and can't be changed. Which is far too low for flooded lead acid batteries. Draining a lead acid battery all the way down to 10.8v can damage it. If you don't have a separate low voltage disconnect or accidentally let a lead acid battery drain that far down, it might damage the battery. If you use a lithium battery that has a built in BMS you should not have to worry about that. I went through two cheap no brand $10 PWM controllers that were very inaccurate and quickly broke before buying this controller that actually works correctly.

6.04.2026

T**G

Good Product

Quick delivery. Efficient solar controller.

3.07.2022

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€ 45.93

Duties & taxes included

In stock

Sold byAmazon AustriaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Austria.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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