Living E Caveman
10 W
Hi all,
this is the short version.
I got a 24v 15ah ebay duct tape battery.
I get very little power from it for 3 cycles now.
when my currie electrodrive battery guage says it is getting low, I've only gone 100-200yards.
I understand the curie gauge is for SLA and my main hope now is that the battery seems very very slightly discharged when I recharge it.(cells go from 3.5 down to only 3.2 when guage says low.
I still don't understand why I have so much less power than for my 10ah lithium battery.
I'm still cycling it, and will just cycle it much lower next time to try to bring the batteries to life.
I just want power and range to increase.
you can ignore the rest of this post. I'll post my final results soon.
I'm scared of this vpower (24v 15ah) battery i got recently. the charger it came with didn't work, and I hope i can figure this thing out before i start stomping on it.
I had a working charger just like the one it came with, so i plugged it in the bms and left, putting my trust in the bms for once. mistake. upon returning, It would not charge and read about 24v. 2 days later, today, i check its total voltage and it magically reads 27v. happy! and it charges again!(for a few seconds)
I checked all the cells via the balance wires and they all read 3.4v or so. but when i put the power cord to a motor, it does nothing and the whole battery's voltage drops a few volts withing seconds of doing nothing. (then bounces back) even an electric drill motor doesn't run. even directly from the battery (no bms in line) it does the same thing.
my fear is that, because i got it from ebay from a seller with 20 some positive ratings, its fake. but the dealer had other batteries and no one else has left negative feedback, so i'm hoping i just don't get it.
I'm not new to batteries, 3yrs XP, but this baffles me---
I was trying to measure the current, so i put a low voltage light (12v) to the (3.4v)balance wire and it lit dimly. I think it should have lit a low watt bulb more than a standard 9v battery does, but no. this is where it gets weird. I put the bulb to the main contacts, expecting the filament to burn out, but nothing! no light. still reads ~24volts tho. what is wrong here?????? update: i came back and it did run a scooter motor with some strength. Is there a bms inside as well as the outer white one? I'll return soon after more experimentation.
this is the second time it push me a tenth of a mile, then my bike battery gauge says its already nearly depleted. I'm going to cycle it some more and hope it gains more distance,what a mess. honestly put in a fuqing manual, or you get negative feedback dude.I'm still hoping it breaks in.
its duct tape and vpower stickers. I'm very sad, this messed up my holiday. depended on this to work.
chinese lifepo+bms first timer here, so hoping I'm just missing something concerning balancing. I hate admitting it, but i need someone who knows what they're doing now. I'll check back hourly for replies.
this is the short version.
I got a 24v 15ah ebay duct tape battery.
I get very little power from it for 3 cycles now.
when my currie electrodrive battery guage says it is getting low, I've only gone 100-200yards.
I understand the curie gauge is for SLA and my main hope now is that the battery seems very very slightly discharged when I recharge it.(cells go from 3.5 down to only 3.2 when guage says low.
I still don't understand why I have so much less power than for my 10ah lithium battery.
I'm still cycling it, and will just cycle it much lower next time to try to bring the batteries to life.
I just want power and range to increase.
you can ignore the rest of this post. I'll post my final results soon.
I'm scared of this vpower (24v 15ah) battery i got recently. the charger it came with didn't work, and I hope i can figure this thing out before i start stomping on it.
I had a working charger just like the one it came with, so i plugged it in the bms and left, putting my trust in the bms for once. mistake. upon returning, It would not charge and read about 24v. 2 days later, today, i check its total voltage and it magically reads 27v. happy! and it charges again!(for a few seconds)
I checked all the cells via the balance wires and they all read 3.4v or so. but when i put the power cord to a motor, it does nothing and the whole battery's voltage drops a few volts withing seconds of doing nothing. (then bounces back) even an electric drill motor doesn't run. even directly from the battery (no bms in line) it does the same thing.
my fear is that, because i got it from ebay from a seller with 20 some positive ratings, its fake. but the dealer had other batteries and no one else has left negative feedback, so i'm hoping i just don't get it.
I'm not new to batteries, 3yrs XP, but this baffles me---
I was trying to measure the current, so i put a low voltage light (12v) to the (3.4v)balance wire and it lit dimly. I think it should have lit a low watt bulb more than a standard 9v battery does, but no. this is where it gets weird. I put the bulb to the main contacts, expecting the filament to burn out, but nothing! no light. still reads ~24volts tho. what is wrong here?????? update: i came back and it did run a scooter motor with some strength. Is there a bms inside as well as the outer white one? I'll return soon after more experimentation.
this is the second time it push me a tenth of a mile, then my bike battery gauge says its already nearly depleted. I'm going to cycle it some more and hope it gains more distance,what a mess. honestly put in a fuqing manual, or you get negative feedback dude.I'm still hoping it breaks in.
its duct tape and vpower stickers. I'm very sad, this messed up my holiday. depended on this to work.
chinese lifepo+bms first timer here, so hoping I'm just missing something concerning balancing. I hate admitting it, but i need someone who knows what they're doing now. I'll check back hourly for replies.