Title: MY DIY LIPO PACK FROM DEAD LAPTOP BATTERY Post by: MKARTIKGANDHI on February 21, 2015, 07:42:55 PM hello friends
saw some videos on youtube and made my own diy lipo from lenovo r61 dead laptop battery battery series in panasinic CGR18650DA details are as follows http://c550715.tootoo.com/product-6261263/cgr18650da-panasonic-18650-2-45ah-3-7v-li-ion-battery-cell.html (http://c550715.tootoo.com/product-6261263/cgr18650da-panasonic-18650-2-45ah-3-7v-li-ion-battery-cell.html) here is the build idea https://www.youtube.com/watch?v=adfydRg8PYU (https://www.youtube.com/watch?v=adfydRg8PYU) watch this guy claims that it gives more then an hour of flight time with NCR18650B batteries capacity is 3450 mAH my diy battery is in charging currently i will keep you posted with how much flight time i got from it here is 1 hour flight of NCR18650B https://www.youtube.com/watch?v=KSfJCb7PYJ4 (https://www.youtube.com/watch?v=KSfJCb7PYJ4) NOTE:-please friends if sombody have dead laptop batteries let me know. if my DIY battery is good to go then i am willing to buy dead lappy batteries or you can try this for yourself it will save you lot of money here are batteries http://www.banggood.com/2PCS-NCR18650B-3400mAh-3_7V-Gold-Plating-Rechargeable-Li-ion-Battery-p-940444.html (http://www.banggood.com/2PCS-NCR18650B-3400mAh-3_7V-Gold-Plating-Rechargeable-Li-ion-Battery-p-940444.html) NOTE:-some people doubt power output of these batteries . and according to my research over internet they are save for flying approx 1 meter length planes dont use it with more then 20-30 A ESC it will not deliver that kind of power but i must say it will give a long FPV flight for which i made this pack many many thanks to my friend hitesh who gave me his lappy battery so that i can complete my projecj Title: Re: MY DIY LIPO PACK FROM DEAD LAPTOP BATTERY Post by: aman1256 on February 21, 2015, 07:45:42 PM Wow That's a Really Good Idea. Really Appreciate That. :)
Regards, Aman. :) Title: Re: MY DIY LIPO PACK FROM DEAD LAPTOP BATTERY Post by: MKARTIKGANDHI on February 21, 2015, 07:52:35 PM i think it will work currently battery voltage is around 9.5 and almost 10 amp current output
i will post new levels after fully charging the lipo :hatsoff: 8-) 8-) (:|~ Title: Re: MY DIY LIPO PACK FROM DEAD LAPTOP BATTERY Post by: MKARTIKGANDHI on February 23, 2015, 09:23:06 PM i am happy to inform all of you that the battery works pretty well it flew great my plane is flying wing speedster pro from vortex-rc ....
as compared to 2200 mah lipo it is light weight and small size and of 2450mah one of the only flaw is its c rating is not parallel to lipo it delivers about 75-80 % of a 20c-30c lipo but still it is good enough for flying and best for fpv enjoy make diy batteries from laptop lipo and save money :hatsoff: Title: Re: MY DIY LIPO PACK FROM DEAD LAPTOP BATTERY Post by: subhashjk0508 on February 23, 2015, 09:49:38 PM More info like flight time ,end voltage, c rating,mah.and nice battery.
JK Title: Re: MY DIY LIPO PACK FROM DEAD LAPTOP BATTERY Post by: MKARTIKGANDHI on February 24, 2015, 11:07:23 AM till now i did a flight of 20min with it and battery was still in good charge
did not drained it to the end voltage still now it give 10A current checked it and i think c rating is not hight 15-20c max and it gives constant discharge i dont think there is a burst current rating in these batteries because of obvious reason that they are made for laptop and not for rc my model is a flying wing it requires less power glide ratio is very good Title: Re: MY DIY LIPO PACK FROM DEAD LAPTOP BATTERY Post by: MKARTIKGANDHI on February 25, 2015, 10:34:12 AM you anyone wants to add an over discharge protection circuit to this battery pack then here is the link
https://www.youtube.com/watch?v=1Fs4SfVSsLk (https://www.youtube.com/watch?v=1Fs4SfVSsLk) but i think a low voltage alarm will suffice for park flying 8-) enjoy |