Testing LiitoKala "7Ah" LiFePO4 Cells

In this episode, I test out a 4s2p arrangement of LiitoKala "7000 mAh" LiFePO4 cells. If you believe the label, this would end up with 14Ah capacity in a small package. All in all, not what I expected. The pack works well, although it's slow to charge, but I was glad to try them out. Update - I realize my calculations at the end of the video don't make much sense. I actually don't remember how long the endurance test ran, but the power analyzer measured 9.386 output until the inverter did a low-voltage cutoff. It was 2.3+ amps draw, perhaps for 4 hours. Update 2 - I did not take into account the power used during the high-load test in the beginning, so the total capacity for this test was 9.386 + however much used during the brief 22A draw CW test. Update 3 - When charging the battery after this video overnight, I used a different charger that goes to 14.6v and doesn't stop till the BMS cuts connection (instead of the Imax B6 "smart" charger that I used prior to this test). The total delivered into the battery from overnight charge was 12.039A. So it may really be a 14Ah battery or close to it. Thanks for watching, and if you found any of this useful please consider supporting me on Patreon:   / ad6dm   or dropping a tip in my PayPal tip jar: https://www.paypal.com/cgi-bin/webscr... Parts List (Disclosure: I get a small commission on Amazon and eBay links, no change in price to you): LiitoKala "7000 mAh" LiFePO4 cells: https://www.aliexpress.com/item/2019-... BMS: https://ebay.us/O6ebh2 Pure Nickel Strips 0.15mm thick 100mm long: https://amzn.to/2H210Ah Double cell battery holders for 32650 cells (will fit 32700): https://rover.ebay.com/rover/1/711-53... Or print your own cell holders with a 3D printer: https://www.thingiverse.com/thing:296... PVC Blue Shrink Wrap 170mm wide: https://amzn.to/2Xc6j9t LED mini voltmeters: https://amzn.to/2H3va5d Flat latching switches: https://amzn.to/2Y7Ss0v 5.5x2.1 power connectors (for charging): https://amzn.to/2ViPHMQ Anderson Powerpole connectors: https://amzn.to/2RfrNww ATO fuse holder 12AWG wire: https://amzn.to/2MQj6Kw Or build a lower capacity but higher charge rate & higher discharge rate battery:    • Making my own QRP LiFePO4 Power Pack   Follow me on Twitter:   / ad6dm   Visit my website: https://ad6dm.net Talk with #JerryNet™ on Digital Voice! DStar: REF367A Yaesu Fusion: YSF 68798 DMR: Talkgroup 3128459 Thanks and 73!