lithium battery

Looking for a Compact PWM Speed Controller for My Project

Hey everyone! I'm in search of a really small PWM speed controller that can work with a 3.7V lithium battery. Ideally, it needs to be no larger than…

Why Isn't My RV's AC Working with My Solar Setup?

I recently upgraded the air conditioner in my small RV from an old 120v unit to a new 12v one. I have three 100w solar panels and a…

Trouble with Harbor Freight Thunderbolt 100W Charge Controller – Is it Me?

I'm new to solar setups but have some electrical knowledge. I've tried three different Thunderbolt 100W charge controllers from Harbor Freight, and I'm starting to wonder if I'm…

Why is my Renogy Rover only charging at 5 amps?

I've got a Renogy Rover LI 20A that I've recently set up with a new lithium battery (Renogy 100Ah LifePO4, model RBT12100LFPTMBT) after it sat unused for about…

Confused About MPPT Charge Controller Voltage Settings for Lithium Batteries

I recently bought a budget-friendly MPPT charge controller and the instructions are poorly translated, making it tough to understand. There's only one voltage setting I can adjust that…

Is My TP4056 Charger or Battery Faulty?

I recently purchased a 3.7V rechargeable lithium battery and I'm attempting to charge it using a TP4056 module. However, after charging, the blue light on the module indicates…

What Voltage Does My Worklight Charger Need?

Hey everyone! I've misplaced the charger for my Voltec 08-00712 portable worklight and I'm trying to figure out the correct voltage for a replacement. The worklight has a…

Do I really need a DC to DC charger for my lithium battery upgrade?

Hey everyone! I'm in the process of upgrading my travel trailer's battery system from lead acid to a lithium battery (200 Ah). I'm also planning to add an…

Why Is My Solar Charge Controller Sending Over 18V?

I've got a 300-watt, 18-volt solar panel connected to a Renogy Wanderer Li 30A 12V PWM charge controller, which then goes into a 12-volt, 140-amp lithium battery. The…