Ansmann 2850 AA Cells Performance Results!

[MarioJP]

Since there are hardly any reviews or barely known, well I am about to give my legit review based on what I have experience so far with these cells.

I got these cells 2 days ago and all I have to say is WOW the reviews were not kidding at all. Never have I used a cell that has a very solid performance. In fact it beats energizers 2500, Duracells 2650 and even Sanyo 2700, and it is par with Energizer Ultimate Lithium in terms of Lasting power.

In fact I decide not to do a break in and decided to just charge the first cycle. This is just the first recharge/discharge cycle. Results are??. I am very very impressed. It charged my blackberry Phone from completely dead to 95% on the first charge cycle.

Another thing I noticed about these cells is that it is hard for these cells to heat up during charging/discharging. Not even brand new white tops Duraloops cells stays that cool during discharge. It even comes with the 2 year warranty if the cell should fail withing the 2 year period.

So far its only been 2 days and only charged them once so I will keep you guys posted.


The physical quality of these cells are made well. Much better quality than the duracells 2650 and slightly better than the Eneloops or Duraloops. Don't get me wrong these are great cells, but i wasn't too satisfied since my mobile charger will eat the duraloops. Still much better than alkalines but still.

But these 2850 Cells are the king of performance hands down!!. They have a very low internal resistance. My Mobile charger actually stays cool. That never happens with any of the other cells I tried in the past. Even brand new cells.

Also want to say that all of the 4 cells out of the package were exactly 1.14v that means that these cells are in good shape. Though they don't have a manufacture date but from the results they are pretty new cells.

 

[Marduke]

Run a test cycle on them and I think you'll be surprised.

 

[MarioJP]

Run a test cycle on them and I think you'll be surprised.

I think I will when I get the time. Right now i need to keep a backup power source when I am on the go lol.

These cells are slightly lighter than the Duracells 2650.

I can give the Label Info

AA HR6 2850mAh (AKKU) the AKKU means lol.

 

[monkeyboy]

I only have good things to say about Ansmann batteries. I had a bunch of AA 2700 Ansmann's for 3+ years now and they're still going strong despite all the abuse i've put them through.
I've tried Energizer and Uniross cells which have died within one year.

Some years ago, I came across a test of Ansmann 2300's over 100 cycles (website is no longer up) and they outperformed even the Sanyo 2300's which were top performers at the time.

I also own the Ansmann energy 8 charger but I'm not too impressed with that. The "auto discharge" function seems to discharge for a set time regardless of the state of the battery (even if it's completely flat). Occasionally it can terminate charge early too.

I'm interested to see your test results on the 2850's Mario.

 

[45/70]

Interesting. I wonder who makes Ansmann batteries? I'm sure they don't, so that'd make them rebadged ........????

Dave

 

[MarioJP]

I also noticed that these cells can handle large amount of current whether its from charging or discharging, plus on the labe it saya "fast rechargeable"

 

[vali]

The truth about if they are good or not will be disclosed after some use 1 year or so). Several high capacity cells were good when new, but after some cycles/use they developed very high self discharge or the capacity was greatly reduced.

 

[VidPro]

performance results??? more like "first look".
the other assmann :naughty: batteries that were tested in various locations on the web, had good capacity, and low self discharge for not BEING an actual LSD cell, it will be interesting to see what happen in Time, when the other Thangs go all yuckey.

 

[MarioJP]

performance results??? more like "first look".
the other assmann :naughty: batteries that were tested in various locations on the web, had good capacity, and low self discharge for not BEING an actual LSD cell, it will be interesting to see what happen in Time, when the other Thangs go all yuckey.

Well reason for the "performance results" title is that eventually it is going to give me the final results. But from the start so far I am very impressed. So much energy crammed into a AA cell:devil:.

At the initial first charge cycle I actually had to keep an eye as for some reason the charger would terminate the charge too soon. This happened many times and was a bit frequent during the charging cycle. It would display "full" and I kept resetting the charger every time it did that. Until eventually voltage peaked at 1.48V-1.49V and that is when i stopped the charge.

The second charge cycle things went smoothly and this time no interruptions, and the charge stopped at 1.49V which is the correct timing to terminate the charge.

Update: Batteries starts to get warm when the current reaches 2.70Ah and terminates when it gets to 2.85Ah-2.90Ah
Only 2 Cells are being charged since my mobile charger uses 2AA and I rotate so this way I always have a set charged. So far the results are

Cell 1: Terminated at 2.94Ah 1.51V
Cell 2: Terminated at 2.97Ah 1.51V

I don't leave the batteries in the charger for trickle charging either. The capacities for these cells are too high for a 97ma trickle charge I think.
Charging Current Rate:1800mA (Does not seems to warm up the cells during charging at all, only starts to warm up when the cells are nearing to max capacity.)

Total time for both cells 1hr:34min

Not bad

 

[Marduke]

Still waiting for a capacity check to check the real "performance".

 

[MarioJP]

working on it lol. Also keep in mind that these cells are still new as I heard that brand new cells take several cycles to obtain full capacity. But so far in the "real world Performance" they do indeed perform very well from the start.

Results won't be in until tomorrow and would take 4-6 hours to fully discharge these cells at 500ma discharge rate. So I am going to get the results so far and see how much capacity theses cells really do have.

I will keep you posted

 

[MarioJP]

So far with the 2 cells I have tested for the capacity are.

Cell 1 2500mAh
cell 2 2580mAh

Looks like still needs more cycles. My other set of cells which were tested in a real world. It finally charged my blackberry from 0 to 100%. Seems like these 2 cells are getting better.

These are the updates so far. One thing to know is that during charging one of the cells terminates too soon, or false termination. I am guessing is due to the cells are still new.

New cells will cause the charger to false terminates and eventually be eliminated after several cycle from what I read. Anyways I am still not done.

 

[Turbo DV8]

Also want to say that all of the 4 cells out of the package were exactly 1.14v that means that these cells are in good shape.

:thinking:

1.14 volts is nearly stone cold dead for NiMH!

 

[MarioJP]

:thinking:

1.14 volts is nearly stone cold dead for NiMH!

I know that, but most were saying if the batteries comes 0 volts out of the package you might have a bad cell. I was just trying to find out if these cells were not completely dead.

 

[davidefromitaly]

So far with the 2 cells I have tested for the capacity are.

Cell 1 2500mAh
cell 2 2580mAh

Looks like still needs more cycles. My other set of cells which were tested in a real world. It finally charged my blackberry from 0 to 100%. Seems like these 2 cells are getting better.

These are the updates so far. One thing to know is that during charging one of the cells terminates too soon, or false termination. I am guessing is due to the cells are still new.

New cells will cause the charger to false terminates and eventually be eliminated after several cycle from what I read. Anyways I am still not done.

do you use a lacrosse bc900 for testing?

 

[MarioJP]

do you use a lacrosse bc900 for testing?

Yup!. 500mA discharge rate.

all 4 cells are currently testing in progress and has been discharging for 4 hours and still going.

Update: all 4 cells are done discharging and this is what I got

Cell 1: 2400mAh.
Cell 2: 2402mAh.
Cell 3: 2402mAh.
Cell 4: 2402mAh.

This is strange??. How did i get 2500mAh last time?? I am 400mAh short. Sounds like the charge terminated a bit too early. Any suggestions because I am confused:sigh:

 

[Egsise]

According to Finnish consumer agencys test:
Capacity after 10 cycles: 2378mAh
Capacity after 50 cycles: 2419mAh
Capacity after 130 cycle: 2241mAh
Capacity after 20 days: 38%

 

[Marduke]

Yup!. 500mA discharge rate.

all 4 cells are currently testing in progress and has been discharging for 4 hours and still going.

Update: all 4 cells are done discharging and this is what I got

Cell 1: 2400mAh.
Cell 2: 2402mAh.
Cell 3: 2402mAh.
Cell 4: 2402mAh.

This is strange??. How did i get 2500mAh last time?? I am 400mAh short. Sounds like the charge terminated a bit too early. Any suggestions because I am confused:sigh:

What setting are you using? The "Test" mode is the correct mode to use, NOT the discharge mode.

Also, I hope you learned to not blindly believe the number on the label, especially when it's beyond the current possibilities (ie. they are lying).

 

[MarioJP]

I hope that is not the case. I am still not done testing these cells. I only use the discharge after full charging the cells.

I suppose I can use the test but that can take a very long time, though i haven't looked into that feature yet. What exactly does that do to the cells?

I want to know if these cells in fact can go up to 2850mAh. Maybe not perfect but at least close, overall they are solid performers rechargeables

 

[Marduke]

Your cells will never get anywhere close to 2850, guaranteed.

The capacity reported at the end of the discharge cycle (discharge > charge) is the CHARGE capacity, NOT the DISCHARGE capacity. It shows how much energy went INTO the cell, not what came OUT OF the cell.

The TEST mode (charge > discharge > charge) will display the DISCHARGE, or true capacity.


It takes no more time than what you are doing since you need to start from charged anyhow. When you come home with discharge cells, put them on TEST at 1A/.5A, and they will be done by the next morning.