Getting The Most Out Of Batteries In Winter

Updated 10-15-2026

Take care of your Rungu Dualie® batteries in winter

Riding Rungu Dualie in winter snow is rewarding, controllable and fun. Maximize the experience by treating your Rungu Dualie batteries correctly this winter.  Rungu Dualie uses Li-ion batteries and all Li-ion batteries are sensitive to low temperatures.  Batteries operating at 0⁰ Fahrenheit (-20⁰ C) can lose as much as 20% of their capacity because of freezing temperatures. Worse, charging your batteries at temperatures below freezing can even damage the batteries permanently.  This blog discusses three rules for taking care of your batteries in winter.

The Three Rules

1. ALWAYS charge your batteries at temperatures above freezing.  If you don’t have a heated garage, remove the batteries from your Rungu Dualie and charge them indoors before riding.  Charging a battery below freezing causes damage inside the battery cells. The damage is NOT REPARABLE and it is PERMANENT. The damage reduces your range and power output.
2. Storing batteries at room temperature before riding in winter is better than keeping them outside.  Li-ion batteries lose capacity at temperatures below freezing.  Storing a Rungu Dualie battery at 0⁰ Fahrenheit (-20⁰ C) results in a capacity loss that decreases your range by at least 17%.  When you store your battery indoors at room temperature and then plug it into Rungu Dualie right before riding, your range only drops by 10%. 
3. Don’t store your batteries plugged into the charger.  Leaving your batteries plugged in and charged to 100% for periods of more than a few days reduces the life of your battery.  If you don’t plan to use your Rungu for more than a couple of weeks, remove the batteries and store them discharged at room temperature.  Charge them up right before you start riding again.

If you have further questions about operating Rungu in winter, email support@rungudualie.com and we’ll get back to you as soon as we can.