Great presentation! Something valuable I learned: Do NOT let a lithium-ion battery get too low.
@ForceTronics7 ай бұрын
Thank you 😊
@mmh19227 ай бұрын
Excellent presentation! Thank you
@ForceTronics7 ай бұрын
Glad you liked it!
@thenextproblem80017 ай бұрын
Thanks for sink and source tips for typeC!
@ForceTronics7 ай бұрын
No problem glad you found it useful
@TheChalansillo4 ай бұрын
Could you explain why do you need R14? (Parallel with the zener)
@ForceTronics4 ай бұрын
The purpose of r14 is to pull down the USB power bus once power is removed from it. There are some caps there that can store some energy after power is removed. R14 just helps bleed them off quickly. Put it there to be safe, may not be needed
@lhoussain78527 ай бұрын
Hello, will I find all the previouse exclusive content you've made in patreon ?
@ForceTronics7 ай бұрын
Yes
@lhoussain78527 ай бұрын
@@ForceTronics Thank you!
@jaredharvey15117 ай бұрын
Any suggestions on how to have 1 USB, 1 load, with 3x 18650 battery at 3.3v? Mostly how to safely charge in parallel.
@ForceTronics7 ай бұрын
Even when working with Lithium Ion batteries that are the "same" they still vary with capacity as well as charge and discharge rates. As they age the differences typically become more pronounced. With that in mind, to get the most out of them you need to charge them individually and monitor their discharge rates individually to prevent one from over discharging when the other batteries still have capacity (or over charging). That is why electric vehicles designs have complex "battery management systems." Other battery technologies, like nickel metal hydride, you can get away with charging and discharging at the same rate since they are more rugged to over charging or over discharging, but of course their capacity is not as good as Lithium. So the challenge is coming up with a design that can charge them individually, control their rate of discharge individually, but still use them as parallel power sources.
@jaredharvey15117 ай бұрын
@@ForceTronics agreed, BMS is good. I'm planning on a TP4056 with under voltage and short circuit protectors for each cell. However I'm not sure how to distribute the load evenly. I'm tempted to use a diode to prevent one battery from back charging another cell.
@ForceTronics7 ай бұрын
It might be better if you try to find a way where you don't have to operate cells in parallel. For instance can you just find a high capacity single cell that equals the three cells you're using or why not just operate the cells one of the time and switch them out once one is drained. With these two approaches you totally avoid the load balancing aspect of it