Search found 1652 matches

by flippy
May 29 2020 4:51am
Forum: Battery Technology
Topic: Fast Charging - What is the secret?
Replies: 36
Views: 1966

Re: Fast Charging - What is the secret?

Tool batteries charge at successfully at very high rates. Makita 18V chargers charge at 9 amp maximum. Their secret is good engineering and design. no, they use low capacity high current cells with short cycle life. not high capacity cells with high cycle life like you see in automotive or laptop u...
by flippy
May 08 2020 5:43am
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 1145
Views: 158151

Re: kWeld - "Next level" DIY battery spot welder

Got my kWeld yesterday and got it all together, just waiting on the power source now. For the power source, I ordered two Turnigy Nano-tech 5000mAh batteries, with the intent to run them in parallel to reduce the 'abuse' on each battery, but I've read what seem to be conflicting information. I've r...
by flippy
May 03 2020 9:54pm
Forum: General Discussion
Topic: gas price thread
Replies: 784
Views: 73423

Re: gas price thread

still 7 bucks in europe...
by flippy
Apr 23 2020 5:10am
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 1145
Views: 158151

Re: kWeld - "Next level" DIY battery spot welder

i used it with a set of 4 60Ah thundersky/winston cells that i used for years in my previous car and it faulted out as the amps was WELL above 2000.

so, dont use those.
by flippy
Apr 03 2020 3:14pm
Forum: Motor Technology
Topic: Kelly controller KLS7230S overtemp error - factory reset
Replies: 6
Views: 125

Re: Bricked Kelly KLS controller

just go to the support page, fany will probably answer.
by flippy
Apr 03 2020 2:54pm
Forum: Motor Technology
Topic: Kelly controller KLS7230S overtemp error - factory reset
Replies: 6
Views: 125

Re: Bricked Kelly KLS controller

email fany, explain the current state of the unit and ask if a firmware fix would help. if possible they will send you the correct file.
by flippy
Mar 27 2020 6:18am
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 1145
Views: 158151

Re: kWeld - "Next level" DIY battery spot welder

if you have brand new cells fully charged you might get pretty serious amps. that will reduce after a few cycles or just discharge the pack to 4v per cel or something.
by flippy
Mar 26 2020 10:49am
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 1145
Views: 158151

Re: kWeld - "Next level" DIY battery spot welder

technically you could just set the wire length to 1m or so so it does not error out. but you will probably blow the arse out of the diodes if you use it like that. best is to change the supply side so you stay within spec.
by flippy
Mar 18 2020 7:04am
Forum: Motor Technology
Topic: Calculating QS205 motor torque vs. speed curves
Replies: 13
Views: 2326

Re: Calculating QS205 motor torque vs. speed curves

Bullfrog wrote:
Mar 17 2020 10:03am
Communicating with QS is fairly challenging :)
depends on how many motors you order... :roll:

that said, they are are a fuckton better then sevcon for example. they wont even respond a email unless you order a pallet of the things.
by flippy
Mar 17 2020 5:59am
Forum: Battery Technology
Topic: charger 3kw
Replies: 50
Views: 2258

Re: charger 3kw

they are exactly the same thing as a "normal" lipo charger except its not written on the box. Only up to the point of full charge, yes. But a lot of chargers (for example, hobby balance chargers, et al) stop the charge action at a programmed point. They don't continue to apply voltage to the pack w...
by flippy
Mar 17 2020 4:16am
Forum: Battery Technology
Topic: Malectrics OR KWELD spot welder, which is better?
Replies: 3
Views: 675

Re: Malectrics OR KWELD spot welder, which is better?

the kweld is superior, no question but there is a price for it, litteraly. if you do this hobby wise and dont do "heavy duty" work or pro level battery building i would just buy a malectrics as it only needs a simple 12v SLA battery to drive it and you can repair it yourself if you blow up the mosfe...
by flippy
Mar 17 2020 3:59am
Forum: Battery Technology
Topic: charger 3kw
Replies: 50
Views: 2258

Re: charger 3kw

Are you saying these are proper chargers rather than plain PSUs? Terminate charge automatically when the battery is Full? a (lithium) battery is " full" when you reach the set voltage and the battery does not take anymore current. it is -that- simple. that some chargers have a little extra componen...
by flippy
Mar 16 2020 2:43pm
Forum: Battery Technology
Topic: charger 3kw
Replies: 50
Views: 2258

Re: charger 3kw

or just buy a proper CC/CV mean well from the ELC or HLC line or better yet: the HRP/HRPG line wich are medical grade.
by flippy
Mar 15 2020 4:14am
Forum: Battery Technology
Topic: charger 3kw
Replies: 50
Views: 2258

Re: charger 3kw

Translation: Is it possible to use this Adaptto "charging coil" with other controllers, or is it designed so that it only works with theirs? in your opinion you can use the charging coil with all the controller or you have to go through the adapter controller http://adaptto.com/Products/Charging-Co...
by flippy
Mar 13 2020 5:12am
Forum: Battery Technology
Topic: Li-ion cells cycle ageing
Replies: 441
Views: 46868

Re: Li-ion cells cycle ageing

what is your indication why the 30Q suck so much?
spec sheet wise it should behave better.
by flippy
Mar 12 2020 12:36pm
Forum: Battery Technology
Topic: charger 3kw
Replies: 50
Views: 2258

Re: charger 3kw

HK12K wrote:
Mar 12 2020 12:16pm
...and for the quick charger on the go with no time to sit around monitoring things...
https://www.safelincs.co.uk/fireblitz-a ... inguisher/
:wink:
automatic is just for lazy people. :mrgreen:

but FE-36 is nice stuff. i still got old style halon in my car and kitchen. 8)
by flippy
Mar 12 2020 11:54am
Forum: Battery Technology
Topic: charger 3kw
Replies: 50
Views: 2258

Re: charger 3kw

Plus the safety concerns flippy expressed. https://www.aliexpress.com/item/4000743682041.html or https://www.aliexpress.com/item/4000782479393.html eiter should be mandatory if you plan on doing something if you dont know if those cells can even take the "fast" charging currents while being confine...
by flippy
Mar 12 2020 8:38am
Forum: Battery Technology
Topic: Do you need to "break-in" your batteries?
Replies: 5
Views: 415

Re: Do you need to

john61ct wrote:
Mar 11 2020 8:49am
Have not seen formal testing to support either way.
my testing shows that most cells increase in capacity a few percent after the first few charges but lose them pretty much a few cycles later.
by flippy
Mar 11 2020 8:37am
Forum: Battery Technology
Topic: Do you need to "break-in" your batteries?
Replies: 5
Views: 415

Re: Do you need to "break-in" your batteries?

its temperature in this case.
using a battery like that for cranking a car causes the battery to heat up, and that lowers the IR wich improves performance.
by flippy
Mar 11 2020 12:29am
Forum: Battery Technology
Topic: charger 3kw
Replies: 50
Views: 2258

Re: charger 3kw

john61ct wrote:
Mar 10 2020 4:16pm
Yes can find the store no problem, but not the charger (PSU), deleted the app still no go.

Never mind could be my setup,
dont use the app, just use your pc.
by flippy
Mar 10 2020 4:02pm
Forum: Battery Technology
Topic: charger 3kw
Replies: 50
Views: 2258

Re: charger 3kw

john61ct wrote:
Mar 10 2020 3:24pm
No go, maybe their website tech team stayed home 8-)

Trying this
https://www.google.com/search?q=site%3A ... 000W-5000W
ZJIVNV Official Store
by flippy
Mar 10 2020 2:57pm
Forum: Battery Technology
Topic: charger 3kw
Replies: 50
Views: 2258

Re: charger 3kw

john61ct wrote:
Mar 10 2020 11:21am
Link doesn't work for me, any alternative path?

Maybe some unique name or text to google?
https://www.aliexpress.com/store/1242857
by flippy
Mar 10 2020 10:26am
Forum: Battery Technology
Topic: Malectrics power supply, Graphene or Ultracapacitor
Replies: 2
Views: 298

Re: Malectrics power supply, Graphene or Ultracapacitor

the malectrics welder will not survive supercaps. do not do this. go to your local car parts store and buy the cheapest 40Ah battery and use that. and get something to charge the battery if you dont have a power supply that can put out 14V. the capacitor unit from kweld is matched to the kweld wich ...
by flippy
Mar 10 2020 10:17am
Forum: Battery Technology
Topic: charger 3kw
Replies: 50
Views: 2258

Re: charger 3kw

https://www.aliexpress.com/store/group/S-2000W-3000W-5000W/1242857_507703805.html up to 8kW, if you want to murder your cells even more. please not that you WILL create LOTS of heat in your battery and cause a thermal "issue" (aka: massive fire) if you dont watch the internal temperature of your bat...
by flippy
Mar 10 2020 10:09am
Forum: Battery Technology
Topic: Fast Charging - What is the secret?
Replies: 36
Views: 1966

Re: Fast Charging - What is the secret?

Pedrodemio wrote:
Mar 09 2020 5:36pm
Or narrow down to one cell and focus in what is the best we can get with it
this is why my go-to is the samsung 29E and the panasonic PF. they hold the balance between lifepspan, power and price.