Alright now before i let rumors get the best of me i have come to the experts does running batteries in parallel truely double the amperage? I am still currently building within the 20 amp continuous discharge limit of a single LG 18650HE2 2500mAh at .25 but id like to go down a little lower maybe .2 or .15 which accually comes out to 28 amps but i dont really wanna dont a bomb in my hand
Double amperage
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As I understand, when you run in parallel you about 75% of the expected amperage.
EG. two 18650s with a 20 amp limit gives you about 30 amps to work with. I'm not sure, I learned this from a Grimmgreen video. So additional confirmation would be wise. Skip to 05:30
EG. two 18650s with a 20 amp limit gives you about 30 amps to work with. I'm not sure, I learned this from a Grimmgreen video. So additional confirmation would be wise. Skip to 05:30
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This is what I was told as well. More specifically, one should be running a single battery at about 80% max of continuous discharge rating. We add a little fudge factor with dual batteries run in parallel because we have to assume some slight imbalance (i.e. you're actually drawing a little more from one battery or the other, or one battery can unload a little faster, or your contacts aren't in exxxxxxactly the same condition, etc). So, we drop that 80% to 75% for fudge. (2 X 20A batteries = 40 . . . 40 x .75 = 30A)
Also too, it's good to check battery voltage before charging, to make sure they're balanced. (I actually take a couple three nice big taps on my dual mod before pulling the batteries, and I throw them in the charger straight away .. . . it reads voltage.)* You also want to see them charging at the same rate. If the voltage reading after use is more than about .02V off, maybe get a new pair of batteries.
Speaking of pairs. One must pair up a couple new batteries and treat them as a set from then on. You're basically making a "battery pack".
I'm not the Battery Pope, mind you, just some of what I've picked up along the way.
*Batteries in a parallel config can balance each other out. One will basically charge the other in an uncontrolled fashion (i.e. rapid discharge/charge). That's not good. This is why I give the batts a little run before pulling and checking voltage right away. Also, this is, in part, why it's important to start with an equal charge when putting in fresh batts and keep 'em paired and use batteries that are new or have exact equal history, etc. etc.
Also too, it's good to check battery voltage before charging, to make sure they're balanced. (I actually take a couple three nice big taps on my dual mod before pulling the batteries, and I throw them in the charger straight away .. . . it reads voltage.)* You also want to see them charging at the same rate. If the voltage reading after use is more than about .02V off, maybe get a new pair of batteries.
Speaking of pairs. One must pair up a couple new batteries and treat them as a set from then on. You're basically making a "battery pack".
I'm not the Battery Pope, mind you, just some of what I've picked up along the way.
*Batteries in a parallel config can balance each other out. One will basically charge the other in an uncontrolled fashion (i.e. rapid discharge/charge). That's not good. This is why I give the batts a little run before pulling and checking voltage right away. Also, this is, in part, why it's important to start with an equal charge when putting in fresh batts and keep 'em paired and use batteries that are new or have exact equal history, etc. etc.
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I, in fact, last night, placed several tabs of butter on the floor (random places), and then ran around the house in my socks with a chopstick in my ear.
(I'm not condoning this as well)
(I'm not condoning this as well)
Running batteries in parallel doubles the MAX amperage of the system.
Parallel batts increase the amp hours (capacity) while maintaining the voltage of each individual battery.
I, in fact, last night, placed several tabs of butter on the floor (random places), and then ran around the house in my socks with a chopstick in my ear.
(I'm not condoning this as well)
Thats gangster yo............
And hey OP chances of a bomb or explosion or fire or anything other than a cloudy day is slim too nun.
So what about stacking? I have a 13" stacked steam punk brazen bull on the way. How do I build for stacked 18650 35amp bats?
Sent from an equally overly expensive phone, using tapacrap, from yo mama's house.
Sent from an equally overly expensive phone, using tapacrap, from yo mama's house.
Now that one i know it doubles your voltage so be carefull on fully charged ull be pushing close to 8.4 volts so do build below .25 also make sure its not 35 amp pulse becasuse to my knowledge no 18650 is accually above 30 amp continuous this is a major differance
Basically double the ohms of what you normally build.
So if you vape 28 gauge, 5 wrap, 1 ohm at 4 volts
you change to 28 gauge, 10 wrap, 2 ohm at 8 volts.
I like the .2-.4 range.
Sent from an equally overly expensive phone, using tapacrap, from yo mama's house.
I only have parallel. This is a great help everyone.
Sent from an equally overly expensive phone, using tapacrap, from yo mama's house.
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