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Spot Welder - Neat #4575187
11/15/17 05:03 PM
11/15/17 05:03 PM
Joined: Aug 2008
Posts: 24,100
ON, Canada eh?
StevieC Offline OP
StevieC  Offline OP

Joined: Aug 2008
Posts: 24,100
ON, Canada eh?


'18 Dodge Grand Caravan GT - 25k KM - AMSOIL SS 0w20

Fear 20wt oils if you want your engine to last. smirk2
Re: Spot Welder - Neat [Re: StevieC] #4575253
11/15/17 06:09 PM
11/15/17 06:09 PM
Joined: Sep 2004
Posts: 8,009
Marshfield , MA
andyd Offline
andyd  Offline

Joined: Sep 2004
Posts: 8,009
Marshfield , MA
Kewel, way over built for 32 spot welds though. It emboldens me to fix a few bad cells. Thanks


'16 Camry LE STP synth 0w20 and STP filter. the Fridge

1994 Ranger ,the Rat, 5w30 dino, STP filter

'16 Camry SE, Valvoline HM 0w20 and OEM filter
Thick oil is better grin2
Re: Spot Welder - Neat [Re: StevieC] #4575269
11/15/17 06:27 PM
11/15/17 06:27 PM
Joined: Aug 2008
Posts: 24,100
ON, Canada eh?
StevieC Offline OP
StevieC  Offline OP

Joined: Aug 2008
Posts: 24,100
ON, Canada eh?
I was looking for a solution to do this sort of thing with the battery in my robot vacuum that has a bad cell and keeps shutting down as a result of low voltage.

His setup is a tad bit overbuilt but I do like the solenoid and switch for pulsing though.


'18 Dodge Grand Caravan GT - 25k KM - AMSOIL SS 0w20

Fear 20wt oils if you want your engine to last. smirk2
Re: Spot Welder - Neat [Re: StevieC] #4575569
11/15/17 11:00 PM
11/15/17 11:00 PM
Joined: May 2016
Posts: 725
Canada
i_hate_autofraud Offline
i_hate_autofraud  Offline

Joined: May 2016
Posts: 725
Canada

Interesting but why who the guy spot weld whole banks of batteries in parallel? Typical packs
are cells in series, with short nickel tab strips from + to - on the next cell.

I do like that he hot-glued the cells in place, keeps things lined up!

TIP: If you want to build replacement battery packs, it's a good idea
to put each cell thru a charge and discharge cycle, it's possible you'll get a new bad cell that
would spoil the entire pack from day one! Seen it happen!

Re: Spot Welder - Neat [Re: StevieC] #4575796
11/16/17 09:25 AM
11/16/17 09:25 AM
Joined: Aug 2008
Posts: 24,100
ON, Canada eh?
StevieC Offline OP
StevieC  Offline OP

Joined: Aug 2008
Posts: 24,100
ON, Canada eh?
My robot vacuum that I need to fix the battery on has some in series and some in parallel.


'18 Dodge Grand Caravan GT - 25k KM - AMSOIL SS 0w20

Fear 20wt oils if you want your engine to last. smirk2
Re: Spot Welder - Neat [Re: StevieC] #4575825
11/16/17 09:57 AM
11/16/17 09:57 AM
Joined: May 2012
Posts: 4,658
Baltimore, Maryland, USA
zzyzzx Offline
zzyzzx  Offline

Joined: May 2012
Posts: 4,658
Baltimore, Maryland, USA
I've been thinking of using one of those 500F super capacitors for this. Even at 2.7V it seems to work. Otherwise nothing fancy, and no circuity required other than a power supply that I already have to charge the cap.

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