Which battery for a cooker ignition?

crofty

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Trying to figure out what battery to use in our cooker ignition. It uses a single AA and for the last year it`s had a uniross hybrio in it which was new when it went in and has been charged a few times, probably no more than 5.

Recently I noticed it could do with a charge so I charged it up and a few weeks later noticed the ignition wasn`t as lively as it used to be so soon after a charge. On the charger it went again this time for a refresh and it came of at 1834. I`ve got other hybrios of the same age which have had regular cycles that still measure around 2200 so that was disapointing.

Why it`s lost so much capacity I don`t know, but it could explain why the ignition isn`t as strong, for as long as it used to be.

So what are my options? I`m thinking to use an eneloop or an Energizer Ultimate Lithium. The holder on the cooker has put a pretty big dent in the negative end of the hybrio so I`m reluctant to just try an eneloop in it before getting a lithium if need be.

The reason I`m considerring an eneloop or Energizer Lithium is because even before this hybrio went down hill, hot of the charger the ignition has plenty of life in it, it goes click click click fast and strong, but after the voltage settles down it`s noticable slower and weaker. Still very useable but I wonder if an eneloop or a lithium would be a better.

I guess it needs a battery that can deliver a good punch under load for short bursts.

What are the options then, eneloop, lithium or any others?

Breifly considered a 14500 but I don`t know if the cooker could handle the extra voltage and anyway, a proper lithium so close to all that heat doesn`t sit too comfortably :poof: :faint:

Thanks
crofty
 

jerry i h

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1) going down to 1800 from 2300 really is not that bad
2) Energizer Lithiums (what CPF calls 'primaries') are not a problem for catastrophic failure, even when used in conjunction with a BBQ (you have to distinguish between 'lithium primaries' and 'Li-ion rechargeables'; the latter are the ones that will, on occassion, :poof:)
3) 14500 will NOT work, since it's volts is way different from an alky or NiMH (1.2 vs. 3.7-4.2v).
4) my personal prejudice is to use a NiCd. Gives multiple amps without a problem, even if you do not use it that often.
 

Mr Happy

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Trying to figure out what battery to use in our cooker ignition. It uses a single AA and for the last year it`s had a uniross hybrio in it which was new when it went in and has been charged a few times, probably no more than 5.

Recently I noticed it could do with a charge so I charged it up and a few weeks later noticed the ignition wasn`t as lively as it used to be so soon after a charge. On the charger it went again this time for a refresh and it came of at 1834. I`ve got other hybrios of the same age which have had regular cycles that still measure around 2200 so that was disapointing.

Why it`s lost so much capacity I don`t know, but it could explain why the ignition isn`t as strong, for as long as it used to be.

So what are my options? I`m thinking to use an eneloop or an Energizer Ultimate Lithium. The holder on the cooker has put a pretty big dent in the negative end of the hybrio so I`m reluctant to just try an eneloop in it before getting a lithium if need be.
Is this the first time you have put the battery through a refresh cycle since installation? You might want to repeat and see if the capacity increases back towards 2200, and then do a refresh every three months or so of use. The battery might just have lost some of its vibrancy from a year of light duty.
 

crofty

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1. 2300?
2. I do distinguish thank you. If you look I was refering to the latter when talking about :poof: and it was a joke ;)
3. That`s what I thought.
4. Hmm, so you think NiCd would be best, or is it that just your prejudice in general?

Thanks!
 

crofty

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Is this the first time you have put the battery through a refresh cycle since installation?
Before now yes. Which isn`t my usual practice.

I did a refresh at 350/700 then after a few days rest 100/200, there was no improvement. I could give it another go, what rate would you recomend?
 

Mr Happy

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Before now yes. Which isn`t my usual practice.

I did a refresh at 350/700 then after a few days rest 100/200, there was no improvement. I could give it another go, what rate would you recomend?
If you had a C9000 I would suggest a break-in cycle. Otherwise, probably just repeat at 500/1000 (or whatever your charger can do) until there was no further improvement. It's always possible you have just stumbled upon a dud cell.
 

crofty

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If you had a C9000 I would suggest a break-in cycle. Otherwise, probably just repeat at 500/1000 (or whatever your charger can do) until there was no further improvement. It's always possible you have just stumbled upon a dud cell.
I do want a C9000, trying to resist the urge untill next year. I guess if it doesn`t improve after a third cycle it`s either always been or has developed into a dud.

Which would mean another hybrio would do, but I still wonder if another battery would be better. I may just have to try a few diff primary and secondary options and see how they pan out...
 

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