batteries and mahs

[Clivia]

thanks ronaldo and enjay - and wher can I best get them

[ronaldo]

sony
torchy
panasonic
take your choice

[enjay]

May 2, 2014 22:49:57 GMT Clivia said:

thanks ronaldo and enjay - and wher can I best get them

These are the sonys I bought

www.ebay.co.uk/itm/181367140150?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649

I'm going to get another pair too. I've heard you can get them cheaper on the slow boat but for the price I'm not bothered, rather pay the extra and get them sooner lol

Just got to wait on him getting more in stock

[enjay]

Holy poop, myepack seems to be about the next cheapest who actually has them in stock

myepack.co.uk/batteries/sony-us-18650-vtc4-2100mah-battery.html

They seem hard to find just now

[Clivia]

thanks enjay

[Clivia]

oh and another question please - what's the difference between protected and unprotected battery ? - protected against what ?

thanks

[scotsman]

enjay

Are those sonys safe for mech mods/ low ohm ? im using efest protected ones atm i dont know if they are good to go bellow 1ohm

[enjay]

May 3, 2014 8:37:01 GMT scotsman said:

enjay

Are those sonys safe for mech mods/ low ohm ? im using efest protected ones atm i dont know if they are good to go bellow 1ohm

Yeh, safe to at least 0.2 ohms, they're 30amp ones, that's why I got them originally

[scotsman]

enjay

You wouldnt happen to know the limits of These ? i have two but cant find any info on the lowest safe ohms i can go to so im sitting on 1.4ohm with mech mod and those bats

[enjay]

Haven't a clue on the protected ones, just have to google around for info

[scotsman]

Had a look but cant find a rock solid answer i just want to know what is the safest ohms i can use with these

[Brambles]

May 3, 2014 13:57:16 GMT scotsman said:

Had a look but cant find a rock solid answer i just want to know what is the safest ohms i can use with these

Probably about 1.8 ohms , any lower the protection circuit will trip but cannot find hard and fast info on this. All I can find is a test at 2 Amps, because it will not supply 3 amps so will not go as low as 1.2 ohms.

[scotsman]

I checked on the VTR it says 1.4 im if thats true im close to its limits ?

I presume if it lowers it will trip the protection and then its useless ?

[Pepperty]

stupid question 1: if i'm using a kick on a mod, is it correct it offers me protection?.......
Batteries are the bane of my life, that and ohms law......

[davetherayon]

I look for AW IMR or Efest IMR on my batteries, in this link you can see that

IMR = LiMn2O4 (also called LMO) ... An additional property of LiMn2O4 is that it cannot be overcharged. When a "true" IMR cell is charged beyond ~4.25 V, no additional capacity will go into the cell. ("True" meaning it's totally LiMN204, not one capped with another metal like nickel - my comment davetherayon) .... (however) it tends to have very poor cycle life. (won't take 1000 recharges - davetherayon)

Short form : IMR batteries are inherently safer than others, but will stop taking charge sooner. I just had an Efest IMR 18650 pack up on me, but that was after a good year's use. Not bad for a tenner.