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I'm due to buy another 10 or so 18650s to power a range of Thermal and NV gear and some Torches. Would like the highest capacity possible but I don't want to pay $40 per battery, and need actual high capacity, not some crap battery stating 10,000mah.
Where is the best place in NZ to get them at the moment?
watching intently.
I bought some off aliexpress 5 years ago. Some are still diong well, some shat themselves quick time.
Even if I go back through my account and find the original seller, I have zero faith that they will still be selling those stonking good ol 18650's that test bedded at 3400mahrs.
Jacob at https://www.piercingthedarkness.co.nz/ one of the forum sponsors. Good guy and good gear.
Yup +1 for Jacob.Quote:
Originally Posted by Makros
Make sure they are button top, and protected cells. Expect to pay around $60 a pair. Here are some Maxtoch 3500s - still likely genuine:
https://www.trademe.co.nz/a/marketpl...8?bof=zbzRjOFg
I’ve always used Maxtoch or Nitecore but looks like Nitecore got pricey.
Not sure what these are like but are protected and pretty cheap
https://www.rubbermonkey.co.nz/Oligh...y-3-6V-3400mAh
yeah the Maxtoch ( Panasonic ) 3500mAh were the gruntiest I came across. Although was a few years ago now.
Get the nitecored through ken at 55six
Buy good ones....Shit ones can end in tears...Fully charged, in a 4 pack to run a bike light.....on lounge table sounded like a rocket going off inside. First impact was the ceiling then fell to floor as it thrust its insides out over the carpet...I left my toes in the picture for scale...flames were about 2 feet long, looked like a gas welding flame with blue at the battery and yellow flare and smoke.The black bits on the carpet are remnants of molten copper and metals.......Couch ignited like a match hitting petrol.....Just a brief flash and the flames...
Buy good ones....It will save you a fortune (or your insurance company ...)
Attachment 200621
battery cell in wellington
Agreed. But, good ones can do this too, particularly if your charger has a fault. I always charge mine with the charger in the middle of the workshop concrete floor, clear of any combustibles, just in case there is a failure.Quote:
Originally Posted by timattalon
There was a house burnt to the ground locally about 10 months ago due to a battery failure while charging. Was a battery pack for a remote controlled car. Kid was charging it in his bedroom when it fizzed up. Family lost everything, and had no insurance ......
Food for thought - where do you charge your batteries, and if one failed, what would catch fire and what would you loose?
Excellent reminder guys. Thanks. Li ion are all peachy and best thing since sliced bread... till they are not. Moving my charger today.
Cool.Quote:
Originally Posted by timattalon
Where can I get some of these ones?
Had good results with these guys too Mr Positive
The LG are really good, normally a little under stated in capacity but longer run time time then other bigger batteries, Cant get my hands on any atm but normally sell them for $20 each
I can do you a better deal on a batch of 10, drop me a PM
Nitecore from AliExpress have been good for me. Not sure how prices compare to local outlets at the moment though.
www.batterymasta.co.nz would be worth a look
Why button top?Quote:
Originally Posted by mudgripz
I have been using these in my big torches. They seem ot go well.
https://www.trademe.co.nz/a/marketpl...0?bof=7YnfUo7L
helps when you series them.Quote:
Originally Posted by Shearer
It means it has the protection circuit to stop it being over or undecharged I think
Quote:
Originally Posted by Shearer
usually protection cct is in the base not the top................usually
depends on where your base is - protection circuits would usually be at the anode end.Quote:
Originally Posted by gonetropo
they can sometimes have a PTC block on the cathode end.
Both my pard and sytong gear specify non button batteries and as they are usually single cell units so there's no issue with needing them for inter-cell contact. If if you're dealing with recoil (springer, centrefire) then button is best on single cell torches. I'm not sold on protected batteries, a lot of the modern torch drivers run their own voltage regulation which makes it a bit redundant, plus, the extra length can be an issue. I have protected fenix 21700s that will not fit my convoy L21b's without damaging the internals.Quote:
Originally Posted by mudgripz
definite +1 from me too.Quote:
Originally Posted by Makros
@hotbarrels Food for thought, mine were not charging- charging had finished some hours before and they hand been sitting in a plastic carry case after I put the charger away. The batteries in question were actually in use at the time on a slow drain device while we were watching TV...We were going to go to the movies that night and changed our minds at the last minute- two possibilities arise there....if we had taken them with us to use afterwards on the trip home, they could have gone off in the car in the car park if we had left them there, or as we had done previously, in our bag in the theatre (action movie would have been very exciting- Theatre management not so much...) or if we had left them at home, I would not have been there with the extingusher and we could have returned to find ourselves homeless.......Either way we were very lucky.Quote:
Originally Posted by hotbarrels
They were locally sourced grey (probably chinese) batteries
Post deleted sorry.
Id be interested to learn more about long and short 18650. I bought a cheap “ powerbank “ with 18650 inside at jaycar that you could charge by usb but the battery is short so i cant use my torch batteries to charge my phone in the hills. What gives ?
Y’ what ?
Wring thread sorry.
Jacb at piercingthedarkness has great products at a very good price. I have bought a pile of rechargeables from him and never had a problem.Quote:
Originally Posted by Makros
