AA rechargeable batteries
- Thread starter Merlin5
- Start date
Right, I've decided I'll pop into IKEA and get a pack of Ladda AA 2450 mAh, £7 for 4.
Ah yeah, I've also got the XTAR VC4S, it replaced an old and pretty rubbish Nitecore charger. I charge 18650 batteries and AAs. The XTAR is excellent!
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Soldato
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That's a massive capacity for AAs, highest I've seen previously were 2.5Ah.
Caporegime
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Only if they're Lion cells.
Caporegime
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Slowly moving to Lion cells, my Hive thermostat is much better behaved on them. Using these ones:
interesting - had been looking at Kentli ones from earlier thread, but, from China, mostly for the genuine 1.5V they provide (for trv's/raser/torch) - how long have you had them ?
noted the AMPtorrents with the charging cradle are fulfilled by amazon so any returns would be on them
(e: older kentli review summary
Overall, this cell is… interesting. Just don’t expect a miracle in a steel can.
Pros:
Pros:
- Excellent voltage stability, even at high loads
- Li-ion chemistry allows for a very lightweight cell, even with the addition of a DC-DC converter
- High output voltage could allow some devices to run more efficiently
- Low capacity – provides a mere 1200 mAh (1800 mWh) @ 2 amps, and up to 1700 mAh (2550 mWh) @ 250 mA (even alkaline batteries can do better than this)
- Abrupt shutdown when the battery is overloaded, overheated, or over-discharged
- Runs hot at high loads (and therefore is fairly inefficient)
- 1.5 MHz converter and unshielded inductor can cause excessive EMI (electromagnetic interference) in sensitive devices
- Expensive! Costs approximately $10/cell
- Requires proprietary charger
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Have many of the Ikea LADDA rechargeable batteries. The current releases and the previous ones. I prefer the old AAA's as they were 900mAh instead of 750mAh
Seems the higher capacity AA and AAA's are (were) rebadged Eneloop Pro and the lower capacity are rebadged standard Eneloop cells.
Seems the higher capacity AA and AAA's are (were) rebadged Eneloop Pro and the lower capacity are rebadged standard Eneloop cells.
Associate
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Nah, they're just listing them in a way to catch people out. Those batteries claim to be 3000 mWh. Note the mWh and not mAh. They're ~2000 mAh.
They also lie about the self discharging too. One issue with Li-Ion regulated batteries is the CV regulation draws current 24/7. It's low, but over the course of a few months it will drain the batteries down. They have an image claiming years of standby... then say you have to recharge them every 3 months right under it. Not sure that would inspire much confidence in that brand to me.
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Caporegime
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You mean the bit where they say "Choose AmpTORRENT, to be a stylish environmentalist together, the earth is more wonderful because of you. ^ _ ^" didn't win you over?
Standard NiMH, I guess it must be a picture rendering mistake loads of sites that sell them show them as 1.5v
Associate
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That actually is fairly impressive - though for a different battery. My own data point is actually owning a Li-Ion NI-MH replacement battery. My battery can't get anywhere near a year without dying (hence the "different battery" part is quite important), but nice to see at least some offer more traditional LSD rates. That's still worse than the Amazon listing claims mind you (which claims well over 3 years).
After finding them initially quite interesting, I've just never really been that impressed with the Li-Ion NI-MH replacements. They just have too many downsides. Limited current handling (almost always <1C), often unimpressive capacities (hence the mWh shenanigans) and very high cost. They're worse than normal NI-MH batteries in the vast majority of applications, with the only exception being products with very high voltage cut-offs. But even then if the item has high discharge the Li-Ions won't work well (or at all), and if it isn't high drain it's probably cheaper to just run cheap Alkalines instead.
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Which is more at 1.5V than at 1.2V isn't it?
My problem with most NI-MH batt's is the discharge when they are just laying around doing nothing
.I switched to 18650's for most of my flashlights, I use 18650's I extracted out of old laptop battery's and a Nitecore d4 to charge!
Didn't realise they had AA Li-ion battery's, my experience with li-ion is better than NI-MH or Alkaline in general... Will be keeping an eye out for deals on these!
I have a Tado V3+, that thermostat is still going strong though on its original 3xAAA Alkalines I put in 2 years ago, so it's not so bad!
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problemn is, as DarkB alludes, they cram a lot of cheap electronics in the AA Li-on to provide safety (if you don't have external cradle) and a regulated discharge, to keep them safe(r)
I've been running with IKEA Ladda 2450 and 900 for last few years, charged with a Youshiko 4000 charger and combo has been fantastic
In particular battery life in my Xbox Series X controllers has been fantastic. Wish my PS4 controllers could take rechargeables !!
Very pleased
In particular battery life in my Xbox Series X controllers has been fantastic. Wish my PS4 controllers could take rechargeables !!
Very pleased
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