Electric Stunt > New electronic technology
Managing Molicel P28A 18650 batteries
(1/1)
Matt Brown:
Over the last few months I have converted my SV11 arf from a 4S lipo system to a 6S 18650 setup. Motor runs much cooler at same rpm and prop(different motor but same size, different KV) and the 6S battery is a full 3oz lighter than the lipo battery I was using. I’ve been flying electric on lipos for about 20 years. Only the last 5 or so on CL stunt. I have good grasp on Lipo handling and management but not so much with these newer high rate 18650 cells. Can anyone share their thoughts on these batteries. I’ve been playing it safe so far only charging to 4.1 volts per cell and I’m only running them down to about 3.6/3.7 volts per cell(resting voltage).
I was very regimented on Lipos as I ruined my share in the early days of their use. I’d rather not abuse my 18650s. Are you doing storage charges? Limiting how long you leave a pack fully charged? Any other tidbits you can offer?
Thanks, Matt
Ken Culbertson:
--- Quote from: Matt Brown on May 01, 2024, 12:56:50 PM ---Over the last few months I have converted my SV11 arf from a 4S lipo system to a 6S 18650 setup. Motor runs much cooler at same rpm and prop(different motor but same size, different KV) and the 6S battery is a full 3oz lighter than the lipo battery I was using. I’ve been flying electric on lipos for about 20 years. Only the last 5 or so on CL stunt. I have good grasp on Lipo handling and management but not so much with these newer high rate 18650 cells. Can anyone share their thoughts on these batteries. I’ve been playing it safe so far only charging to 4.1 volts per cell and I’m only running them down to about 3.6/3.7 volts per cell(resting voltage).
I was very regimented on Lipos as I ruined my share in the early days of their use. I’d rather not abuse my 18650s. Are you doing storage charges? Limiting how long you leave a pack fully charged? Any other tidbits you can offer?
Thanks, Matt
--- End quote ---
Our electric fliers here have pretty much gone to 100% Li-Ion. I do the same you are doing with the charge, overcharging is bad bad bad, but they can run down all the way to about 3% without batting an eye. Storage is not necessary as a regular thing like it is with LIPO. I keep my flying set fully charged for a couple of weeks and rotate through the set (I have 7) so that each battery gets used at least once in that time frame. My oldest one is just over a year, has about 50 cycles and performs just like my newest one. If anyone could be accused of battery abuse, it is me. Endgame III (64oz) uses every amp it can squeze out of my batteries. I use 6s 2800 and I routinely put 24-2500 back when I recharge. 2300 if it is windy. Similar planes to mine but lighter and without all the drag only use 1800. Point - the batteries don't seem to care. I am sure others will tell you to put them in storage but my experience is that they just don't need it. AND 305 grams - priceless.
Ken
Navigation
[0] Message Index
Go to full version