Resource for tool packs
- Thread starter auraslip
- Start date
docnjoj
1 GW
So according to that list the Makita VT cells are the same as the Bosch VT cells?
otherDoc
otherDoc
Dunno if they're Samsung or not but I have four red Li-ion 1300 mAh 18650 in my Bosch battery case.auraslip said:
No BMS! Which made me wonder...should I use protected cells or not?
Also, if you could advise me a (european?) supplier who would be able to deliver the cells already soldered together (four in a row, nothing fancy), I'd be grateful
BYqSXt8Z
100 W
more specifications about the Ryobi packs in these two threads
http://endless-sphere.com/forums/viewtopic.php?f=14&t=56505
and
http://endless-sphere.com/forums/viewtopic.php?f=3&t=61281
18v 4Ah P108 packs are Samsung INR18650-20Q
40v INR18650-13q
40v slim ICR18650HB2
http://endless-sphere.com/forums/viewtopic.php?f=14&t=56505
and
http://endless-sphere.com/forums/viewtopic.php?f=3&t=61281
18v 4Ah P108 packs are Samsung INR18650-20Q
40v INR18650-13q
40v slim ICR18650HB2
Matt Gruber
1 MW
MOST IMPORTANT imo is to be able to check/charge individual voltages without opening the case.
dewalt dcb204 4ah 20v (18v) have this feature.
they also handle 20a discharge easily in my tests.
and don't have any pcb inside to eventually fail or cause problems.
i charge manually with the charger that came with my bike, and a DVM and timer with 2 wires for 2 packs in series.
dewalt dcb204 4ah 20v (18v) have this feature.
they also handle 20a discharge easily in my tests.
and don't have any pcb inside to eventually fail or cause problems.
i charge manually with the charger that came with my bike, and a DVM and timer with 2 wires for 2 packs in series.
BYqSXt8Z
100 W
Matt Gruber said:
what do you mean they can test the volage? How are you connecting them together? And I find it unlikely that there is no BMS in there.... are you sure?
Matt Gruber
1 MW
https://www.youtube.com/watch?v=XGNuE0C5XYY
skeetab5780 video got me interested enough to buy 2 DeWalt dcb204 for 98/2 free ship. i did not open mine up, but you can see what is inside early in the video. 8 handy connectors to do anything you want, easy to access.
no pcb in there! not in bosch fatpacks either
.
i just hook them in series WITH A FUSE. there are 6 other terminals for testing the cell pairs. i have not had to do any balancing, but it is real important to be able to check now and then.
Using a voltmeter on the handlebar is key to charging and discharging. don't overdo it and life is good!
skeetab5780 video got me interested enough to buy 2 DeWalt dcb204 for 98/2 free ship. i did not open mine up, but you can see what is inside early in the video. 8 handy connectors to do anything you want, easy to access.
no pcb in there! not in bosch fatpacks either
.
i just hook them in series WITH A FUSE. there are 6 other terminals for testing the cell pairs. i have not had to do any balancing, but it is real important to be able to check now and then.
Using a voltmeter on the handlebar is key to charging and discharging. don't overdo it and life is good!
999zip999
100 TW
So you can check at cell level ? Very interesting. So balance charger ?
BYqSXt8Z
100 W
Matt Gruber said:
wow, direct access inside the pack just like that?!
How does it allow you to do balancing since presumably the pairs would be connected in parallel inside the pack? Does this mean that with a dead cell you could also just wire a pack from the pairs directly and keep using a battery that has a dead pair?
Matt Gruber
1 MW
Kudos to Dewalt engineers for making an easy to check pack! If somebody has a balance charger and wants to use it, buy or make a plug. But i'm not going to buy a new charger unless i have a need for it. So lets look at what causes imbalance.
.
What causes imbalance?
1. overdischarge with unequal cells. And poor quality control. I won't buy cells with a reputation for going out of balance. and with my DVM i don't ride too low, this can damage the cells. Excessive amp drain will heat up any battery and could throw it out of balance. While i test at 20a, my cruise is only 4-6a, 7-8a windy. And i will add some Makita packs for more range and less amp load.
2. BMS drains cells and kills cells during storage. i avoid anything that drains cells not in use. I use a relay on the bike to switch off the pack. If the DVM is RED, this tells me to shut it off!
3. if V sag suddenly increases, this tells me to check each pack, and cell pairs. a pair is a single battery and both will be the same.
.
with a 3 year warrany and my careful use, i'm not expecting any bad cells anytime soon.
after then, i'd bypass a bad pair with 2 outside the case.
BUT, i'm sure by then there will be new exciting tool packs to try! They are not too expensive during fathers day, christmas, and other sales.
.
What causes imbalance?
1. overdischarge with unequal cells. And poor quality control. I won't buy cells with a reputation for going out of balance. and with my DVM i don't ride too low, this can damage the cells. Excessive amp drain will heat up any battery and could throw it out of balance. While i test at 20a, my cruise is only 4-6a, 7-8a windy. And i will add some Makita packs for more range and less amp load.
2. BMS drains cells and kills cells during storage. i avoid anything that drains cells not in use. I use a relay on the bike to switch off the pack. If the DVM is RED, this tells me to shut it off!
3. if V sag suddenly increases, this tells me to check each pack, and cell pairs. a pair is a single battery and both will be the same.
.
with a 3 year warrany and my careful use, i'm not expecting any bad cells anytime soon.
after then, i'd bypass a bad pair with 2 outside the case.
BUT, i'm sure by then there will be new exciting tool packs to try! They are not too expensive during fathers day, christmas, and other sales.
999zip999
100 TW
My question is why ? Does dewalt have a balance system in the charger with a lvc only in pack. Or ?
I like having the sense tabs why they do it ?
What cells ?
I like having the sense tabs why they do it ?
What cells ?
Matt Gruber
1 MW
i hope they charge each cell pair. UR18650RX Sanyo say 3 hours to charge. the $59 dewalt charger says 1 hour. need to be careful when fast charging! Makita says 20 min to 80%. Maybe dewalt will soon sell a super fast charger. good idea to charge pairs, not in series. House builders don't do slow charge like me! Need best pcb for FAST imo.
theycan put any pcb in the drill/tool and charger. Lowers cost of packs, less junk inside.
theycan put any pcb in the drill/tool and charger. Lowers cost of packs, less junk inside.
Matt Gruber
1 MW
2/160Gab said:
at 2/120 it would be hard to pass up.
there is also dc9360 nano phosphate. did not see AH, but they claim 2000 cycles, instead of 500.
worth reading those sale flyers!
