Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers

LPF Donation via Stripe | LPF Donation - Other Methods

Links below open in new window

ArcticMyst Security by Avery

dropped my battery, now only charges to cut off voltage

mikeeey

mikeeey

0
Joined
Jun 7, 2007
Messages
1,771
Points
0
tales of the battery that couldn't be fixed...

I dropped my p7 flashlight with 2 18650 batteries in it. One protected and one unprotected one. The protected one (ultrafire) was at the bottom of the flashlight so it took more of an impact when it hit the ground. The light no longer worked, and I thought I broke it, but I found out it was just my battery.

Now when I charge it the light always stays red, and it's stuck at 3.62V, and as soon as it reaches 3.6V that is the cut off voltage, it stops working.

So there's no way to fix my battery is there?

i think it's just funny that the protected one died and the unprotected one still works and didn't blow up:D
 
Last edited:





RA_pierce

RA_pierce

0
Joined
Sep 16, 2007
Messages
3,658
Points
113
I don't know anything about batteries, but maybe the protection circuit is damaged.
 
mikeeey

mikeeey

0
Joined
Jun 7, 2007
Messages
1,771
Points
0
HOLY SHIT!!! the thing started embering!!! yes, fire! i used the closest thing to put it out and that was my THUMB. although i felt nothing, i don't think it actually burnt me, but now i have a big brown mark across my thumb.
 
mikeeey

mikeeey

0
Joined
Jun 7, 2007
Messages
1,771
Points
0
A lesson learned today...

...do not try to unprotect a protected battery

image001vwz.jpg
http://img199.imageshack.us/img199/4223/image001vwz.jpg

now my thumb smells like a firework
 
Gryphon

Gryphon

0
Joined
May 4, 2009
Messages
2,237
Points
83
^-Your last three above posts just kept getting funnier and funnier :D
 
FireMyLaser

FireMyLaser

0
Joined
Jan 12, 2008
Messages
3,290
Points
83
Obviously you shorted the battery. You don't just rip the thing off, you have to take great CARE. Probably the metall ribbon from the positive to the negative side made contact.
 
mikeeey

mikeeey

0
Joined
Jun 7, 2007
Messages
1,771
Points
0
john_lawson said:
do not mix lithium battery types ever especially protected and unprotected

here read number #7

[URL="http://www.able-battery.com/faq.html"]http://www.able-battery.com/faq.html[/URL]
Click to expand...

The two batteries are lithium, one is just unprotected. I didn't see anything on that website mentioning protected or unprotected batteries =/


FireMyLaser said:
Obviously you shorted the battery. You don't just rip the thing off, you have to take great CARE. Probably the metall ribbon from the positive to the negative side made contact.
Click to expand...

yes, it was the ribbon, it happened right after i ripped off the sticky plastic stuff, that must have been keeping the two from not touching and I didn't realize it.
 
N

nikokapo

1
Joined
Dec 26, 2007
Messages
6,129
Points
0
Oh wow sorry man, but the protection circuit was indeed the problem..too bad you shorted the batt :p

Next time I'll give you some tips on how to cut off your finger just for fun.
 
mikeeey

mikeeey

0
Joined
Jun 7, 2007
Messages
1,771
Points
0
elitesniper said:
That happend once to me I just dropped it again and it fixed:D
Click to expand...
haha yeah I tried banging it against the wall and against my kneecap to see if that'd fix it, but it didn't.

The protection circuit looked perfectly fine, I didn't see anything wrong with it.


nikokapo said:
Oh wow sorry man, but the protection circuit was indeed the problem..too bad you shorted the batt :p

Next time I'll give you some tips on how to cut off your finger just for fun.
Click to expand...

lol it's all good, soon enough I wanted to buy some more 18650's and rcr123a's anyway, this is just another good reason to buy some.

o boy! I can't wait!
 
RA_pierce

RA_pierce

0
Joined
Sep 16, 2007
Messages
3,658
Points
113
LarryDFW is selling some Sanyo 18650s... for $7 each I think.
I haven't gotten a chance to try them out yet but I hear good things about them.
 
mikeeey

mikeeey

0
Joined
Jun 7, 2007
Messages
1,771
Points
0
RA_pierce said:
LarryDFW is selling some Sanyo 18650s... for $7 each I think.
I haven't gotten a chance to try them out yet but I hear good things about them.
Click to expand...
each being a 2-pack? or one battery each?
It's just that on DX I can get 2 of them for $7.60
DealExtreme: $7.60 UltraFire Protected 18650 3.7V 2400mAh Lithium Batteries (2-Pack Grey)

but O MY GOD!!!! THEY HAVE RED AND GREEN NOW!!!! AHHAHAAAAHAHAHAAAA!!! YES!
DealExtreme: $9.99 UltraFire Protected 18650 3.7V 2600mAh Lithium Batteries (2-Pack)

DealExtreme: $9.68 UltraFire 18650 3.7V 2600mAh Lithium Batteries (2-Pack) edit: just noticed the green are NOT protected, so. If you want the pretty colors, get the RED.
 
Last edited:
You must log in or register to reply here.




Top