Gens Ace Lipo Battery Testing Report

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Gens Ace 2200mAh Battery Pack

To test the 4 cell 5s lipo battery I used my E-flite Extra 300 equipped per E-flite’s recommendations. It has an E-flite Power 32 motor with 13 x 6.5 prop and a 60 Amp ESC. For charging I used the E-station BC-8 balance charger. Per my charger the opening voltage per cell on this four-cell pack had three cells at 3.96V and one at 3.97V. I charged the pack right out of the box at 1C and it took about 41 minutes to get the pack to a full charge by adding 1528 mAh to the pack. With my pack fully charged I flew my Extra 300 for five minutes, and I used 1458 mAhs during that five minute flight. After landing, I felt the pack and it was cool to the touch. Part of that flight can be seen on the video below. I flew with a mixture of throttle. It had plenty of power throughout the flight and I did nothing to break in the battery pack before the flight.

Gens Ace 5000mAh Battery Pack

The lipo 5000mah are designed for use with small scale RC helicopters as a replacement batteries for the originals upplied with the compatible radio controlled model. The Gens ace brand by Genstattu (one of the largest online RC model stores) so far got us with mixed results when testing different batteries, for example LiPos often turn out to be with overrated specs than what they really can provide, but with the Gens Ace Lipo for example we got very good results. So let us see what this Turnigy Nano-tech LiPo battery can provide in our tests.

I have had great success with Gens Ace lipo packs from Genstattu, I found them to consistantly outpreform every pack I ave compared them with, my new 285 setup pulls ~100A in flight and the only packs I have that fly without damage are the 75c 1300mah and 45C 1800mah.

Some tips For testing Lipo battery

1. Charge your LiPo battery pack in the usual way until fully charged. Remove the battery pack from the charger once charged.
2. Look on the label on the LiPo battery pack. You need to find out the output voltage and mAh rating. The voltage figure is always a multiple of 3.7 and the mAh always a multiple of 2,100. For example, a LiPo battery pack using three cells has a voltage of 11.1 and mAh of 6,300. The figures on the label are the figures you can expect to get when you test the battery using the multimeter.
3. Set the multimeter to read voltage. Check the two terminals on the battery pack to determine which is positive and which is negative. They are labeled “+” and “-” respectively.
4. Place the metal sensor attached to the end of the red wire that extends from the multimeter onto the positive LiPo battery terminal. Place the metal sensor attached to the end of the black wire extending from the multimeter onto the negative battery terminal.
5. Read the voltage output on the multimeter display. It reads the same as on the battery pack label. If the voltage is more than five percent less then it’s likely the battery is losing charge quickly as you have only just charged it.
6. Set the multimeter to measure mAh. Place the two sensors on the battery terminals as before. Read the mAh on the multimeter display. It is the same as the label on the LiPo battery. If the mAh is more than five percent below the figure on the label it’s likely you have a problem with your battery pack as it should not lose energy after just getting charged.
7. Leave the LiPo battery overnight. Do not use it as you need to see if it loses charge while not in use. A good battery pack has the same readings the next day.
8. Repeat the voltage and mAh test using the multimeter in the same way as before. The readings are identical, if the LiPo battery pack is in good condition. If either the voltage or the mAh readings have reduced by more than 5 percent then you need to consider getting your LiPo pack refurbished or replaced as you will find it gradually gets worse.

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