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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🔌 Power your adventure with smart, sleek solar control!

COMPACT VERSATILE - Sleek design fits anywhere, compatible with multiple battery types including lithium.
ROBUST SAFETY FEATURES - Built-in protections against reverse polarity, overcharging, and short circuits ensure peace of mind.
OPTIMIZED BATTERY HEALTH - Smart 4-stage PWM charging extends battery lifespan and boosts efficiency.
REAL TIME SYSTEM INSIGHTS - Clear LCD screen and LED indicators keep you informed at a glance.
SEAMLESS VOLTAGE DETECTION - Automatically adapts to 12V or 24V DC systems for hassle-free setup.

The Renogy Wanderer is a compact, intelligent solar charge controller that automatically detects 12V or 24V systems and employs smart 4-stage PWM charging to maximize battery life. Featuring an easy-to-read LCD and LED indicators, it supports multiple battery types including lithium, and offers comprehensive safety protections, making it the perfect upgrade for efficient, reliable solar power management.

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Item weight	122 g
Display type	LCD
Operating temperature	4E+1 Degrees Celsius
UPC	816360029953
Global Trade Identification Number	00816360029953
Manufacturer	Renogy
Color	black
Size	10A
Style	Charge Controller
Compatible with	Smartphones
connector-type	Usb
Material Type	Gel
Number of Items	1
Power Source	Solar Powered
Included Components	Wanderer 10A solar charge controller
Batteries Included?	No
Item model number	Wanderer 10 Amp 12V/24V
Product Dimensions	11.94 x 7.62 x 2.79 cm; 122.47 g
ASIN	B07NPDWZJ7

Renogy Wanderer

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