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Title: LiFePO4 32650 battery pack for multirotor Post by: Bilal on November 08, 2019, 10:51:05 AM Hi guys,
So I came across a couple of these 32650 3.2V Rechargeable 6000mAh LifePO4 Battery Cell recently and am wondering is they can be used in a multirotor setup. I've already been using NCR18650b cells for a while now in 3S2P and 4S2P configurations with reasonable results. A 3S2P 6000mah li-ion pack is about 80grams lighter than a 3S 5200 mah phantom 2 battery and gives around 13-15 minutes of hover time with an AUW of 1300gms, which in my opinion is quite decent. Am wondering if these cells would be feasible in such a use case or not, if anyone around here has any experience with these, please share your knowledge. https://robu.in/product/32650-3-2v-rechargeable-6000mah-lifepo4-battery-cell/ Title: Re: LiFePO4 32650 battery pack for multirotor Post by: Balakrishna Reddy on November 08, 2019, 11:19:13 AM Hey Abbas.
You checked it's capacity but you forgot to check it's weight. I think 18650 battery you are using is approximately 3000mah at 48~50gm where as the lifePO4 battery you posted is double it's capacity and triple it's weight which I think is unsuitable for UAVs I would suggest 21650 or 26650 li ion which have good density and also low cost. Energy density of 21650 and 26650 are comparable with those of li ion. Title: Re: LiFePO4 32650 battery pack for multirotor Post by: Bilal on November 08, 2019, 11:26:44 AM you pointed out the right thing Bala, I didn't consider weight, neither am I able to find the weight of these batteries anywhere.
Title: Re: LiFePO4 32650 battery pack for multirotor Post by: Bilal on November 08, 2019, 11:38:24 AM Energy density of 21650 and 26650 are comparable with those of li ion. Any source for these batteries? |