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.

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Renogy 10 Amp 12V/24V PWM Negative Ground Solar Charge Controller Compact Design w/LCD Display for AGM, Gel, Flooded and Lithium Battery, Wanderer 10A

Renogy 10 Amp 12V/24V PWM Negative Ground Solar Charge Controller Compact Design w/LCD Display for AGM, Gel, Flooded and Lithium Battery, Wanderer 10A

Product ID: 446780408

Details

Brand
Renogy
Colour
Charge
Material
Gel
Product dimensions
11.9L x 7.5W x
Voltage
24 Volts

⚡Auto 12V/24V system detection

📊Real-time LCD & Bluetooth monitoring

🔋10A PWM charge current

Description

⚡ Power your off-grid lifestyle with smart, compact control!

COMPACT SLEEK DESIGN - Fits effortlessly into any solar setup, saving space without compromise.
REAL TIME ENERGY INSIGHTS - Bluetooth-enabled monitoring via app keeps you in control anytime, anywhere.
SMART 4 STAGE PWM CHARGING - Maximize battery lifespan with Bulk, Boost, Float & Equalization modes.
MULTI BATTERY COMPATIBILITY - Supports AGM, Gel, Flooded & Lithium batteries for versatile use.
SEAMLESS VOLTAGE AUTO DETECTION - Automatically adapts to 12V or 24V systems for hassle-free setup.

The Renogy Wanderer 10A PWM solar charge controller delivers intelligent 4-stage charging with automatic 12V/24V detection, compatible with multiple battery types including lithium. Its compact design and real-time LCD plus Bluetooth monitoring empower efficient, reliable off-grid energy management, protecting your battery and optimizing performance.

Specifications

Asin	B07NPDWZJ7
Best Sellers Rank	126,284 in Business, Industry & Science (See Top 100 in Business, Industry & Science) 123 in Solar & Wind Energy PWM Controllers
Brand	Renogy
Colour	Charge Controller
Customer Reviews	4.2 4.2 out of 5 stars (42) 4.2 out of 5 stars
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 centimetres
Item Type Name	Compact Design w/ LCD Display for AGM, Gel, Flooded and Lithium Battery, Wanderer 10A
Item Weight	122 g
Manufacturer	Renogy
Manufacturer Part Number	Wanderer 10A
Material	Gel
Model Number	RNG-CTRL-WND10
Operating Temperature	40 Degrees Celsius
Unit Count	1.0 count
Upc	816360029953
Voltage	24 Volts

Reviews

User

Poor quality

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

3.05.2026

User

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

User

Good Product

Quick delivery. Efficient solar controller.

3.07.2022

User

Muy buena calidad. Excelente funcionamiento. Información útil y oportuna.

Está muy bien. Te muestra voltaje y amperaje del panel solar y de la batería por separado. En esas fotos vemos que el voltaje del panel está en 18.8V mientras que el de la batería está en 13.8V, porque ya no necesita mas. (Medición tomada a las 15:30hrs) Había usado durante años otros controladores que solo te ponen cuatro foquitos, y con eso no puedes saber casi nada sobre como está tu sistema, y cuestan prácticamente lo mismo.Tiene función para baterías de litio, pero no sirvió, la batería variaba el voltaje sin control en las horas de sol, y no prendía ni un mini ventilador de 2.0 watts. Pienso que fué por la mala calidad de la batería, no por el controlador.Creo que compraré otros de estos controladores para mis otras estaciones solares.

9.05.2024

User

Buena calidad vs costo

Cumple con lo que promete, Trabaja de forma correcta.

25.06.2025

User

Funciona muy bien

Hace todo lo que promete

2.03.2025

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