How to store LiPo battery safely - In depth LiPo fire tests

The purpose of this video is to show how different solutions for LiPo battery storing can act when something goes wrong with LiPo battery. Please read description for more info. No Commercial Use: We don’t permit our materials to be used to make money or to gain any other financial benefit. TEST #1 Starts 00:05 This test shows the most common combination - a few Phantom batteries stored in a LiPo safety bag. The fire is triggered by overcharging one Phantom 2 battery cell. Results - massive heat damage to the floor, smoke damage. The bag itself was enough to contain the fire and there were no holes in the bag after the fire. LiPo safety bag can be used to store Phantom battery sized LiPos. LiPo bag used: http://www.hobbyking.com/hobbyking/store/__4364__Lithium_Polymer_Charge_Pack_25x33cm_JUMBO_Sack.html TEST #2 - Starts 01:26 The aim of this test was to find out if LiPo safety bag can contain a large sized LiPo fire. Starter - battery overcharge. Results - The bag did not help at all, fire destroyd everything in seconds. LiPo bag used: http://www.hobbyking.com/hobbyking/store/__4364__Lithium_Polymer_Charge_Pack_25x33cm_JUMBO_Sack.html TEST #3 Starts 03:40 Ammo box with lid slightly open. This seems to be fairly popular option for storing LiPos but performs badlyl - open flames for long period of time that also light up everything around the box. The floor under the box was ~300° C after the test but it was not enough to ignite the floor. Starter - 1 cell overcharge. TEST #4 Starts 05:29 Ammo box with the lid closed and rubber seal removed. This test did perform very well. The pressure was released from the box and flames did not come out. There is still smoke and heat damage to the room and floor but nothing catches fires. Starter - 1 cell overcharge TEST #5 Starts 06:53 Ammo box with lid closed (with seal, airtight). One of the worst options due the preassure build-up in the box. May explode. At one point the seal failed and the pressure was released at very rapid rate which tipped the box over. The box was swollen and bent after the test. Starter - battery overcharge. TEST #6 Starts 09:10 Ammo box with the lid open and bag of sand placed on top of it to extinguish the fire. The idea itself is great but the pressure released from the LiPo often blows the sand away. This options seems to be a lottery - if the sand does fall in, it saves other batteries from ignition. If it does not then it results in open flames. 14kg of fine grain sand was used per test. Starter - battery overcharge. Conclusion - the best way to store LiPo batteries safely seems to be ammo box with with lid closed and seal removed. Smaller batteries can also be held in LiPo safety bag but ammo box does definitely perform better. In all tests the fire was triggered by one cell or whole battery overcharge. NOTE: Batteries in storage (~3,7V per cell) are a lot less violent than fully charged or overcharged batteries. The tests were conducted by Martin Raju and Jorma Suumann.

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