Ikea New rechargeable batteries and charger

[rookiedaddy]

Did 2 quick discharge tests on the AA-pack LADDA LSD...

Using MAHA C9000 to perform 2 tests, initial (new from pack) discharge and Refresh & Analyze cycle.
Initial discharged results:
====================
Cell 1 >> 1784mAh
Cell 2 >> 1814mAh
Cell 3 >> 1806mAh
Cell 4 >> 1797mAh
Cell 1 and 2 discharged @ 500mA, Cell 3 and 4 discharged @ 1A.


R&A results:
===========
Cell 1 >> 2418mAh
Cell 2 >> 2444mAh
Cell 3 >> 2443mAh
Cell 4 >> 2445mAh
All cells recharge @ 1A and discharge @ 500ma.

Result looks good.

 

[kappa7]

I've bought too a set of ladda AA.

Charge/discharge at 1A:
First discharge:
1693mAh
1703mAh
1685mAh
1670mAh


Second discharge after a full charge (termination set [email protected]):
2404mAh
2416mAh
2389mAh
2403mAh

 

[KeepingItLight]

Thanks for sharing your tests!

According the datasheet I have for the Panasonic Cell Type BK-3HCC (Eneloop Pro AA), typical capacity is 2550mAh, and minimum capacity is 2450mAh. Those specs are based on testing under these conditions:

Charge : 250mA x 16h, Discharge : 500mA(E.V.=1.0V) at 25deg.C

Given the higher charge and discharge rates used in your tests, your results are probably in the same ball park. I am not a battery expert, however, so perhaps someone who knows more than I will have something to add.

 

[kappa7]

You are right, higher discharge current leads to slightly lower capacity.
To compare our results you can see here the HJK review of the eneloop pro. At 1A he gets the same capacity as me (2401mAh). I'm now 99% sure that these cells are eneloop pro.

 

[Enelooper]

Re: Ikea New rechargeable batterries and charger

you don't see which country they were made in

Actually, if you look carefully at the picture of the AAA version on Ikea's website, you can see the words "Made in Japan".

 

[keithy]

Re: Ikea New rechargeable batterries and charger

For Australian CPF members - these new Ikea Ladda (Ikealoops) have finally made it to our Ikeas.

They have not been updated on the websites yet, but the prices for four AA/AAA packs are:

Eastern States:

• AA 2450 mAh $9.99
• AA 1000 mAh $4.99

• AAA 900 mAh $8.99
• AAA 500 mAh $4.49

WA/SA (haven't been able to confirm pricing on all the varieties yet):

• AA 2450 mAh $10.90
• AAA 900 mAh $5.95

So great value for Japanese rebadged Eneloops pros and Eneloop Lites!

 

[stephenk]

Re: Ikea New rechargeable batterries and charger

For Australian CPF members - these new Ikea Ladda (Ikealoops) have finally made it to our Ikeas.

They have not been updated on the websites yet, but the prices for four AA/AAA packs are:

Eastern States:

• AA 2450 mAh $9.99
• AA 1000 mAh $4.99

• AAA 900 mAh $8.99
• AAA 500 mAh $4.49

WA/SA (haven't been able to confirm pricing on all the varieties yet):

• AA 2450 mAh $10.90
• AAA 900 mAh $5.95

So great value for Japanese rebadged Eneloops pros and Eneloop Lites!

That's excellent news. Now I just need a good excuse to go to IKEA!

 

[sim888]

Re: Ikea New rechargeable batterries and charger

For Australian CPF members - these new Ikea Ladda (Ikealoops) have finally made it to our Ikeas.

Thanks Keithy...Perfect timing, was on the look out for some new batteries, and stumbled on this thread!

Headed straight to Ikea last night and grabbed a bunch of these new ones as well as that new charger.

So, for those in Melbourne; Richmond Ikea had plenty of AA & AAA's (all capacities) but only had 2 chargers left.

All is well so far, and if anyone wants to know anything not already outlined above ask away (not that i think i'll bring too much to the table!)

 

[cj0]

Battery 1: 2508 mAh
Battery 2: 2508 mAh
Battery 3: 2508 mAh
Battery 4: 2508 mAh

Is what my calibrated/adjuste SkyRC MC3000 returns, after >= 3 cycles of 1.0V (load) discharge and 0dv charge, as capacity values for the Ikea Ladda 703.038.76 23076 9 NLD 1639. My guess this "1639" is the production datecode YYWW, so 2016 week 39. These Ladda's were purchased January 2017 in The Netherlands. The code I mention is where Henrik's photo lists "1543":

The charge/discharge energy efficiency was:
- 2.973 / + 3.676 = 80.88%
- 3.049 / + 3.694 = 82.54%
- 3.038 / + 3.707 = 81.95%
- 3.050 / + 3.644 = 83.70%

 

[cj0]

I am trying to run some unaccelerated cycle testing on the Ikea Ladda 2450 AA batteries, with recommended slow 245 mA -> 0.25A charging current.

To match the recommended 16 hours of charging, 16h x 245mA = 3920mAh, a 3900 mAh capacity limit has been programmed into the NiMH charging profile of the MC3000.

First I tried terminating with -2 mV delta V. That resulted in capacity cuts (due to over charging).
Then I reduced to -1 mV delta V charge termination. Then still 1 out of 4 Ladda 2450 AA batteries were terminated due to "charging capacity of 3900 mAh reached" (I guess).

That is why I ended up terminating at 0dV.

Is my math correct, or should I use a different battery capacity value in this slow cycle testing?

 

[SilverFox]

Hello Cj0,

The drop in voltage termination method is less than reliable at low charge rates. Time or maximum charge is a better way to terminate the charge.

The logic goes like this:

Select the charge rate.
Terminate on maximum charge time, or on maximum capacity.

Ignore voltage drop during the charge.

Tom

 

[Kurt_Woloch]

I don't know why they recommend 160% of the actual capacity. I think this is severely overcharging the batteries. Look at this graph here:

http://aacycler.com/post/nimh-charge-and-energy-efficiency/

As it seems to me, a regular Eneloop won't take up any more energy beyond 2200 mAh, which is about 15% more than the rated capacity. So with the Ladda 2450 it shouldn't make any sense to go over 2800 or at most 2900 mAh. But if the charger terminates at 0dV, I doubt it will go even that high anyway... at 0 dV regular Eneloops terminate at about 1940 mAh (102% of rated capacity), so I guess the Laddas will go up to about 2500 mAh, no matter what mAh limit you have actually set. So I'd say the limit you set doesn't matter at all, unless you set it much lower (at 2500 mAh or below).

How do you discharge the cells? This in my opinion is just as an important part of cycle testing as the charge because the lower you go with the voltage cut-off, the lower the cycle life will be. And the cut-off will yield different remaming capacities depending on the discharge current.

According to my cuirrent theory, cycle testing results should be taken with a grain of salt anyway because there's a certain variance in cycle life, no matter what the rating is, especially between different batches of batteries even from the same sort (read: different manufacturing dates). That's why you may find some batches of 2nd generation Eneloops to yield a longer cycle life than some batches of 4th or 5th generation Eneloops, even though they are rated at a lower cycle count.

Just look at those two cycling tests (one of which is still ongoing) for a comparison:
http://aacycler.com/battery/aaa/panasonic-eneloop/

http://aacycler.com/battery/aaa/sanyo-eneloop-hr-4utga/

And those (keep in mind that these should actually be the same cells by FDK, only re-badged):
http://aacycler.com/battery/aa/ikea-ladda-2450/

http://aacycler.com/battery/aa/panasonic-eneloop-pro/

http://aacycler.com/battery/aa/fujitsu-black/

http://aacycler.com/battery/aa/amazon-basics-high-capacity-precharged/

http://aacycler.com/battery/aa/duracell-ultra-2500/

 

[ChibiM]

Who is the person behind AAcycler.com? A member here on CPF?

 

[sbj]

Yes:
http://www.candlepowerforums.com/vb...ger-analyzer&p=5032968&viewfull=1#post5032968

 

[ChibiM]

Yes:
http://www.candlepowerforums.com/vb...ger-analyzer&p=5032968&viewfull=1#post5032968

Thanks!

 

[Cekid]

does this charger also have some kind of top off charging? or its charging is 100% complete when led light turns green?

 

[Hugh Johnson]

This thread is great news. I'm looking for eneloop pro's and also recently saw these at IKEA. They're exactly one third the price of the eneloops in my region. I'll pick some up.

 

[stephenk]

Purchased a large batch of the IKEA Ladda 2450 AA and 900 AAA batteries today. Every single cell measured at 1.31V before charging - very consistent!

 

[Cekid]

some people say how those ikea ladda 2450 ( to be honest they are talking about eneloop pro, same thing) are fast loosing capacity and that you have original 2450 maybe a short amount of time? story goes like this: everything is fine at the beginning but only after a few cycles its capacity is dropped, they becomes "lazy" etc...is it true? i have them for awhile but it's too early to say anything about those claims...

 

[ChibiM]

Can you show us who and where they claim this?