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Rechargeable Ni-Mh Batteries - AA Cell Size (2900mAh) - Pack of 20 - £19.95 @ 7dayshop
Rechargeable Ni-Mh Batteries - AA Cell Size (2900mAh) - Pack of 20 - £19.95 @ 7dayshop

Rechargeable Ni-Mh Batteries - AA Cell Size (2900mAh) - Pack of 20 - £19.95 @ 7dayshop

Buy forBuy forBuy for£19.95
GETGet dealVisit site and get deal
5 packs of 4 x 2900mAh Rechargeable batteries. Each pack complete with protective, modular cases for under £20 delivered to your door
supplied with a FREE plastic (semi-transparent) storage case

I bought some of these a while ago and they are thicker than normal aa's
they wont fit in some compact devices
- Billy Congo

58 Comments

Original Poster

Edited by: "phillred" 17th Jul 2011

SuperEd

Go to deal link fixed & image added

great deal heat added but who needs this many rechargeables ?oO

leekickass

great deal heat added but who needs this many rechargeables ?oO



you dont have kids do you

Great deal . May have to throw out my old tired 2400mah batteries and get some of these 2900mah ones. Yea don't really need 5 packs , may ask some family members if they wanna buy a pack for £4 .

Banned

leekickass

great deal heat added but who needs this many rechargeables ?oO


people with remote controls, bike lights, smoke alarms, etc etc!

bit of a silly comment really!

Banned

KEVIN6BZ

Great deal . May have to throw out my old tired 2400mah batteries and get … Great deal . May have to throw out my old tired 2400mah batteries and get some of these 2900mah ones. Yea don't really need 5 packs , may ask some family members if they wanna buy a pack for £4 .


or just buy a pack of 4 for £4.29 oO

7dayshop.com/cat…409

Edited by: "csiman" 17th Jul 2011

leekickass

great deal heat added but who needs this many rechargeables ?oO



i do although i already bought more than 5 packs from them not so long ago. heat added.

Don't forget the 1% Quidco back too!! (_;)

csiman

people with remote controls, bike lights, smoke alarms, etc etc!bit of a … people with remote controls, bike lights, smoke alarms, etc etc!bit of a silly comment really!


Smoke alarms? I've only ever seen 9v one's.

Banned

csiman

people with remote controls, bike lights, smoke alarms, etc etc!bit of a … people with remote controls, bike lights, smoke alarms, etc etc!bit of a silly comment really!



"Silly comments" here's a very silly one......

"people with remote controls, bike lights, smoke alarms, etc etc!"

Using rechargeables in a smoke alarm is a definite no no(unless they are the Eneloop type) they're also not that great in remote controls.

splatsplatsplat

you dont have kids do you



Yep if you have kids you will soon find out that you can never have to many batteries in the house.


Saying that I'm gonna get these for myself as all mine are in the kids toys and I need my own set for my flashgun.

csiman

or just buy a pack of 4 for £4.29 … or just buy a pack of 4 for £4.29 oOhttp://www.7dayshop.com/catalog/product_info.php?cPath=777_3&products_id=108409



I agree.
Nothing special here. A grand saving of £1.50 (7.5p each) for buying in bulk.

Banned

SHOWMAN36

"Silly comments" here's a very silly one......"people with remote … "Silly comments" here's a very silly one......"people with remote controls, bike lights, smoke alarms, etc etc!"Using rechargeables in a smoke alarm is a definite no no(unless they are the Eneloop type) they're also not that great in remote controls.


utter crap as per usual!

I have some in my Logitech universal remote and havent had to recharge even after 6 months use.

and smoke alarms warn you when the battery gets low! DOH!
Edited by: "csiman" 17th Jul 2011

looks ok for those who dont need so many lidl have 4 packs of 2500mah for £2.47

csiman

and smoke alarms warn you when the battery gets low! DOH!



Not keen on being woken by that annoying noise they make when the batteries go flat, especially at 3am. Think I stick to standard batteries with a longer life and just change them every six months. Would be a shame if the rechargeable suddenly went flat just as the fire starts. DOH!

"a problem with rechargeable batteries is a rapid voltage drop at the end of their useful charge. This is of concern in devices such as smoke detectors, since the battery may transition from "charged" to "dead" so quickly that the low-battery warning period from the detector is either so brief as to go unnoticed, or may not occur at all."
Edited by: "robsprocket" 17th Jul 2011

are these not better one's than the cheap crap you get inside the solar garden lights.

If you're not going to use the batteries for months on end, or plan to use them in remotes, smoke alarms then I'd recommend get the green colour 7dayshop batteries which are low drain

Not a fan of this company's "ready to go batteries" they give continuous inaccurate readings on my digital camera (it shows flat one day then full the next) this could be a fault with my camera but it works fine with Eneloops and standard primaries. They also do not hold their charge as well as Eneloops.

You get what you pay for with batteries. I wouldn't bother with cheaper rechargeables any more.

Yeah eneloops or equivalents should be used in low drain applications like clocks bike lights remotes smoke alarms. Otherwise you're just wasting your time with regular NiMH since they leak more than they give...

Are these 1.5v or undervolted like most cheap rechargeables are?

splatsplatsplat

you dont have kids do you



I would have said the same question six months ago, but every toy needs batteries!!

leekickass

great deal heat added but who needs this many rechargeables ?oO



Used them for the last few years as a professional photographer, work great. I have about 20 sets

I've given up buying unbranded rechargeables, I've had so many that won't even charge the first time let along hold their charge. Duracell rechargeables may be around twice the price, but they're so much better.


MartH

Are these 1.5v or undervolted like most cheap rechargeables are?



Most rechargeables are 1.2 volts, not just the cheap ones.

slimy31

Most rechargeables are 1.2 volts, not just the cheap ones.



"The voltage for rechargeable batteries is more consistent than that of regular batteries
Even though alkaline batteries are rated at a nominal 1.5 volts, they only deliver 1.5 volts when they are fully charged. As they begin to discharge the voltage of alkaline batteries continuously drops. In fact, over the course of their discharge, alkaline batteries actually average about 1.2 volts. That's very close to the 1.2 volts of a NiMH battery. The main difference is that an alkaline battery starts at 1.5 volts and gradually drops to less than 1.0 volts. NiMH batteries stay at about 1.2 volts for most of their discharge cycle."

dr_adams

"The voltage for rechargeable batteries is more consistent than that of … "The voltage for rechargeable batteries is more consistent than that of regular batteriesEven though alkaline batteries are rated at a nominal 1.5 volts, they only deliver 1.5 volts when they are fully charged. As they begin to discharge the voltage of alkaline batteries continuously drops. In fact, over the course of their discharge, alkaline batteries actually average about 1.2 volts. That's very close to the 1.2 volts of a NiMH battery. The main difference is that an alkaline battery starts at 1.5 volts and gradually drops to less than 1.0 volts. NiMH batteries stay at about 1.2 volts for most of their discharge cycle."



Interesting. I've got a set of brand new Energizer rechargeables (1.2v) that don't work with my Wiimotes, any idea why? Non-rechargeables work fine.

Banned

Dont bother with these type of batteries in anything that you dont charge regularly (Especially smoke alarms, remote burglar alarms, etc)

For that you need to buy this type: hotukdeals.com/dea…263

And use the charger here: amzn.to/n2pqzZ
Edited by: "richto" 17th Jul 2011

Banned

MartH

Are these 1.5v or undervolted like most cheap rechargeables are?



I think you are confused. Alkalines are 1.5V only when fully charged, and 0.9 Volts when nearly discharged.

NiMh are ALL ~ 1.45 Volts when fully charged, and are 1.25V for the majority of their discharge life.

NiMh can also supply much higher currents due to lower internal resistance without effecting total battery capacity, whereas alkaline batteries will loose significant capacity at higher current loads.







Edited by: "richto" 17th Jul 2011

Banned

robsprocket

Not keen on being woken by that annoying noise they make when the … Not keen on being woken by that annoying noise they make when the batteries go flat, especially at 3am. Think I stick to standard batteries with a longer life and just change them every six months. Would be a shame if the rechargeable suddenly went flat just as the fire starts. DOH!"a problem with rechargeable batteries is a rapid voltage drop at the end of their useful charge. This is of concern in devices such as smoke detectors, since the battery may transition from "charged" to "dead" so quickly that the low-battery warning period from the detector is either so brief as to go unnoticed, or may not occur at all."


DOH! - you do realise these will probably be better than most alkaline batteries!

Banned

Not for long term use they wont. NiMH old type self-discharge over time, and its unavoidable.

"The self-discharge is 5–10% on the first day and stabilizes around 0.5–1% per day at room temperature"

So worse case It will be totally dead in 3 months just in storage, let alone in use.

So unless you charge them more frequently than every couple of weeks, the lower capacity batteries I linked to above will actually give you a greater useable capacity...
Edited by: "richto" 17th Jul 2011

richto

DOH! - you do realise these will probably be better than most alkaline … DOH! - you do realise these will probably be better than most alkaline batteries!



what are you talking about? as has been said repeatedly, standard NIMH batteries - which these appear to be - self discharge quickly (i forget the exact % - guy above posted it) so are not suitable for low drain apps like remotes and alarms.
for that you need New Tech/Hybrio type or standard alkaline..

these are good for things that need lots of power quickly e.g. cameras, toys
Edited by: "Smiff" 17th Jul 2011

Cool! 20 mini explosive devices! Hot if you think it's ok to save a few quid on rechargeables!

richto

Dont bother with these type of batteries in anything that you dont charge … Dont bother with these type of batteries in anything that you dont charge regularly (Especially smoke alarms, remote burglar alarms, etc)For that you need to buy this type: http://www.hotukdeals.com/deals/8-x-nimh-rechargeable-low-discharge-stay-ready-batteries-10-50-vapextech/952263


battery test Note where vapertech comes againt 7 dayshop.

csiman

utter crap as per usual!I have some in my Logitech universal remote and … utter crap as per usual!I have some in my Logitech universal remote and havent had to recharge even after 6 months use.and smoke alarms warn you when the battery gets low! DOH!



i have logitech remotes with non rechargables in them which haven't had them changed in 3 years...so really what he was saying wasn't crap.

You just got called out and can't face it.

Banned

To save reading, VapexTech are best of the lot, and 7 dayshop the worst...

Anyone that purchased these have a C9000 charger and can tell us how bad they really are?
Edited by: "richto" 17th Jul 2011

20 batteries is a lot but saying that I reckon ive got about a dozen kicking round the house that are getting tired and need replacing. Good deal

1duck

i have logitech remotes with non rechargables in them which haven't had … i have logitech remotes with non rechargables in them which haven't had them changed in 3 years...so really what he was saying wasn't crap. You just got called out and can't face it.



this is getting boring

Banned

csiman

utter crap as per usual!I have some in my Logitech universal remote and … utter crap as per usual!I have some in my Logitech universal remote and havent had to recharge even after 6 months use.and smoke alarms warn you when the battery gets low! DOH!



You seem to be in a minority of one as per usual DOH!.............So stop making a prat of yourself and grow up!
Edited by: "SHOWMAN36" 17th Jul 2011

pot luck on how long they last. Last time I bought them there was a high failure rate after a year or so worth of use.

for some reason these batts or the ones that I received(a while ago) are thicker than normal batterries and so do not fit in torches or other snug battery compartmentos! and so the uses are limited.

they are good batts though...
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