Which battery/cell type to use for emergency use only ?

march.brown

Flashlight Enthusiast
Joined
Nov 25, 2009
Messages
1,472
Location
South Wales, UK
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I already have several torches using different cell types and would like to know which can safely be left in the glove-compartment of the car for many months (many, many) and will still work perfectly adequately when needed ... There will be extremes of temperatures from minus ten centigrade to whatever a summer day can give ... i.e. Hot.

I would prefer to use one of my existing torches of 150 to 200 lumens.

Do I use Alkaline ? ... If so which makes are less likely to leak ? ... I have torches that use AA and AAA ... Would you wrap cling-film or tape round the cells body to minimise any leakage (leaving the top and bottom contact area unwrapped) ?

Do I use Hybrios or Eneloops in AA or AAA ... I don't know if they eventually leak as per the Alkaline ones ... Though they do hold their capacity OK.

Do I use 18650 protected ? ... Do they hold their charge for a long time ? ... Do they ever leak ?

Do I just keep a plug-in torch permanently in the cigar lighter ? ... If so, how will their batteries cope with being on charge every time the car is used ? ... They also don't seem to have a very high mAh capacity or a very powerful beam, hence the preference to use one of my own torches.

I have excluded ordinary NiMh as they lose capacity quite quickly and wouldn't last up to possibly a year or more.

I just want to keep a torch in the car for emergencies, so AAs (1 or 3 cells) , AAAs (3 cell) or 18650 (1 cell) are preferred, as these are the torches that I already have ... I don't really want to buy any different types of cells / chargers ... CR123 prime cells are not readily available round here (South Wales, UK), so would have to bought on the internet ... Are the prime 123s prone to leaking ?

How can it be so difficult to choose a torch to use in the car ?

Any (non-rude) suggestions please ?
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Without buying a new torch I would suggest looking at primary Lithium AA and AAA - Long shelf life.

For my car light I bought a $20 1x CR123 light. I figure if I replace the battery about as often as I replace cars I should be good. :)

I usually have CR123s on the shelf for 2 or 3 years before they get used. Normally buy 50 at a time. I have only had one leak, it was a BatteryStation brand - which I had other problems with - none would drive the incandescent on my A2. They have since changed manufacturers for their store brand.
 
I agree, Energizer Advanced Lithium or Ultimate Lithium.

I use Advanced Lithium myself, couldn't quite feel the difference between EA91 and L91 (besides price), so I went for the cheaper one.
 
Another recommendation for the Energizer Lithium primary AAA and AA cells. They are some of the safest lithium primary cells out there, and will probably outlast your car if it were stored the entire time. (well, depending on how long you hold onto cars)
 
I use eneloops in my emergency gear because I believe in testing that gear at least once every 6 months and some of it doubles as camping gear so it will get used at least once in the year.
 
Another recommendation for the Energizer Lithium AA/AAA.

I keep two AA powered lights in the car with Energizer Lithium AA cells in them, as well as 4 more Energizer Lithium AA cells in a small case in the glove box.
 
I keep a cr123 in a plastic pill fob and a Ultimate Lithium in one of those excedrin to go tubes.....perfect size for a single cell.
 
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