posted
Some background information: Battery is NSB90. It is fully charged. This is the way how we built 16Volts batteryes in Finland Its easy and sheap. One 12volt battery is made in six 2volts cells. We take two of these cells of. this leaves as 2x4volt battery. Why NSP90? Easy. Its dry battery and its very powerful.
DONT FORGET THET BATTERY IS FULL OPERATIONAL AT ALL TIME!
First remove the cover.
The black line is the center of battery.
Cut the top of these lines.
Next cut between the top and side in both sides.
Lift the top of. this needs litle force.
Here you see the main construction off the NSB. Left is shown how the cells are connected in side battery.
Cut this "bridge" carefully.
Cut sides
And bottom.
Posts: 18 | From: Finland | Registered: Dec 2007
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Black line is the wall line inside the battery. Red is the cut line.
Take the lead and paper of. This is sulfuric acid so use glove
The ready 4volt cell. In the top is negative and the lead is the positive connector. And in the other the polarity is other way.
Posts: 18 | From: Finland | Registered: Dec 2007
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-------------------- Team Cactus Sounds 2004: 2nd place european finals street B 2005: european champion street C 2006: european champion street A 2007: european champion street C 2008: european champion street C 2007: WORLD CHAMPION street C 2008: WORLD CHAMPION street C 2009: the end off an era , the beginning off a new, SS5+ Posts: 1347 | From: belgium | Registered: May 2002
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posted
He he. I has been told to Haaparanta to make this crazy modification for NSB90's. And this is very cheap way to do powerfull 16V setup. Maybe Ari will post also pictures how he had made sealings for those 4v volt cells ?
-------------------- -Life begins after 175 db- 4.1 dB's over the goal Posts: 796 | From: Finland | Registered: Sep 2002
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-------------------- Travis Atherton Former Team Music Masters member 2005 World Finals – Street C DAILY DRIVER: 2005 CHEVY SILVERADO 3500, CC LB W/8 MEMPHIS MOJO 15's RECONED WITH FI PARTS ON 1 CRUNCH GP3000 Posts: 3306 | From: Hudson, MI | Registered: Jul 2007
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And offcours : only recommended to do so if knowledge is there how to work with batteries and stuff , otherwise stay away from it - just people know -
@ Haaparanta or Mikko : what is the price of a NSB 90 in Finland ? I can tell that this battery would not be a cheap 4 V battery regards performance versus price overhere in Belgium
Also , why not modify it differend , so you can use all cells and have 3 x 4 V out of 1 battery ...
posted
I see a lott of dirt in the middle part of the batt the other 2 parts stay clean but I wouldn't do this anymore 2v cells aren't much more expensive than a 12v batt.
-------------------- POWER IS NOTHING WITHOUT CONTROL michel van wijk superstreet 1-2 no-wall 159.3 @ 66hz certified Posts: 733 | From: holland | Registered: Dec 2004
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posted
oh man that is the most ghetto thing I have ever seen. I would never risk cutting apart one of those batteries you could probobly really injure yourself if it started shorting out while cutting it
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2 TF One 10" + 1 American Bass 1000.1 + Odyssey 1750 Posts: 2965 | From: Canada | Registered: Dec 2000
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posted
haha... might as well have just chopped it in half with an axe. You can expect to cut the charge/discharge cycles by as much as 80% by doing this too. (might not even get 1 full season from them) Much safer and more cost effective to buy 2v cells unless the NSB's are nearly free.
-------------------- Scottie Johnson Sound Pressure Technologies
quote:Originally posted by scottiej: haha... might as well have just chopped it in half with an axe. You can expect to cut the charge/discharge cycles by as much as 80% by doing this too. (might not even get 1 full season from them) Much safer and more cost effective to buy 2v cells unless the NSB's are nearly free.
Scotty: can you explain why this would affect this?
Haaparanta:
much respect to even try this i would have been afraid it would have shorted out or something
so let me get this straight it takes 2 nsb's to make 1 16 volt cell?
your dedicated to trying new things little dangerous but looks interesting
and oh yea don't you guys own a straight edge or something it looks kinda sloppy
Noise proves nothing. Often a hen who has merely laid an egg cackles as if she laid an asteroid. -- Mark Twain "Imitation is the sincerest form of flattery" Posts: 522 | From: NORTHEAST | Registered: Jul 2007
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quote:Originally posted by scottiej: haha... might as well have just chopped it in half with an axe. You can expect to cut the charge/discharge cycles by as much as 80% by doing this too. (might not even get 1 full season from them) Much safer and more cost effective to buy 2v cells unless the NSB's are nearly free.
Scotty: can you explain why this would affect this?
Haaparanta:
much respect to even try this i would have been afraid it would have shorted out or something
so let me get this straight it takes 2 nsb's to make 1 16 volt cell?
your dedicated to trying new things little dangerous but looks interesting
and oh yea don't you guys own a straight edge or something it looks kinda sloppy
I'm not sure I understand your question fully, but I think you are asking why this would shorten the life of the battery? The answer is because once the battery has been formed (activated) and charged, it is meant to stay completely sealed in order to properly charge and discharge. Once the electrolyte (what little there is in an AGM battery) is exposed, much of it evaporates. The shorter the time period the battery is exposed to the environment the better, and the more dormant the battery is the better. This will reduce the amount of time the electrolyte has to escape. The next big problem is that in order to properly charge, the batteries have to be valve regulated, hence the reason they are also refered to as VRLA batteries (Valve Regulated Lead Acid). This means that in re-charge the battery needs to maintain a certain pressure for the battery to actively accept the charge current. When one is cut open like this it is very difficult to completely seal up, and any tiny leak will allow the battery to vent during re-charge. This leaking will eventually expell what little electolyte is left, and the battery will no longer accept charge.
There are several other reasons this is dangerous, and costly that I will keep to myself, but the above mentioned items would be more than enough to keep me from cutting up a perfectly good battery
-------------------- Scottie Johnson Sound Pressure Technologies
Noise proves nothing. Often a hen who has merely laid an egg cackles as if she laid an asteroid. -- Mark Twain "Imitation is the sincerest form of flattery" Posts: 522 | From: NORTHEAST | Registered: Jul 2007
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posted
So Scottie, modifying Optimas would be a better option?
As you can do these without removing the lid or exposing the cells in any way?
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-------------------- Ben ----- www.EastCoastChoons.co.uk UK SS 1-2 NW Record Holder Team UK - Team ECC - Team RE - Team DD Posts: 2970 | From: Deepest Darkest Norfolk | Registered: Aug 2002
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-------------------- Travis Atherton Former Team Music Masters member 2005 World Finals – Street C DAILY DRIVER: 2005 CHEVY SILVERADO 3500, CC LB W/8 MEMPHIS MOJO 15's RECONED WITH FI PARTS ON 1 CRUNCH GP3000 Posts: 3306 | From: Hudson, MI | Registered: Jul 2007
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