2packs 4S 2600mAh Lipo Battery EC3 14.8V 60C RC Lipo Battery Compatible with RC Helicopter Airplane Car Boat Truck

great cheap battery

I use these mostly in my EDF planes and in my larger planes

Have not flown with them yet. However I was surprised to see they weigh 281g when they are listed at “266g +/- 5g”. They arrived at over storage voltage but balanced. Capacity is spot on at 2609mah. Internal resistance around 5-6m ohm and 3-4m ohm after discharging and charging.

Battery delivers better than expected performance. It made my airplane fly much better.

Lot's of power with 5min hi-speed flying.

2do lipo shows a cell almost dead

I bought the 2 pack as the price was very reasonable. Upon arrival the first thing was to check the voltage. One battery was shipped with an acceptable "STORAGE" voltage. The 2nd battery I was concerned about as each cell was NOT anywhere close to the same voltage. I had to balance the battery, and then discharge the battery 4 cycles before it would accept a balance charge. Afterwards the batteries function very well, accept and hold voltage as would be expected. I use both batteries in my Detrum WACO Biplane and get 12 to 14 minutes of flight time (half throttle) with no problems.Would I buy them again . . . . YES ABSOLUTELY !