which rechargable AA batteries ???

[cossiemetro]

as above i've used sony for my sony camera dsc H5, what do you recommend whats the most mAh you can get i've seen 2700
cheers

[ian in lancs]

I use these in my flashguns - top value

http://www.calumetphoto.co.uk/item/CJ0011/

[Pints]

I suggest getting a hyrid type rechargeable. They retain charge better and are less susceptible to "memory" issues.

Although they are currently not available (AFAIK) in very high mAh, it's not really a problem. I use Sony CycleEnergys 2000 mAh and they last for ages.

[JohnS]

I use the ones from 7dayshop.com

http://www.7dayshop.com/catalog/product_info.php?c...

I've been using them for a few years now with no issues at all.

[EINSIGN]

http://www.tantronics.co.uk/acatalog/AA_Size_Recha...

[olimeads]

i use these in my flash guns ect ect

http://www.jessops.com/online.store/products/30984...

[ian in lancs]

Pints said:

I suggest getting a hyrid type rechargeable. They retain charge better and are less susceptible to "memory" issues

NiMh batteries don't suffer from the memory effect that plagued NiCad batteries.

[fergusd]

ian in lancs said:

Pints said:

I suggest getting a hyrid type rechargeable. They retain charge better and are less susceptible to "memory" issues

NiMh batteries don't suffer from the memory effect that plagued NiCad batteries.

Nimh is less susceptible than NiCd, but the same effect for the same reasons occurs . . . it's due to crystal formation on the Nickel part of the cell chemistry I believe . . . not that it matters, NiMh is the only AA rechargable cell that you should buy . . .

I bought a load of Fujicell AA NiMh 2800mAh cells off ebay at about this time last year about 12 quid for 8 of them, they have been (and are) great, good capacity, been using them in flash and portable video recording kit for a year . . .

I think it's worth using them and charging them in matching sets, helps prevent cell reversal issues

Fd

[miniman]

I have a set of EverReady 2700mAh NiMh which for some reason refuse to hold their charge and will only manage 4-5 shots in my flashgun. I presume I am doing something wrong.

[Iain328]

I got some Uniross Hybrio AA rechargeables a while ago - brilliant things - they hold their charge over a long period unlike most rechargeables & seem to last a long time in the camera as well. Way better than any other rechargeables I've tried, they behave much more like "normal" batteries.

http://www.batterylogic.co.uk/hybrio.htm

Edited by Iain328 on Wednesday 30th December 22:39

[cossiemetro]

excellents stuff thanks for everybodies input

[ian in lancs]

fergusd said:

ian in lancs said:

Pints said:

I suggest getting a hyrid type rechargeable. They retain charge better and are less susceptible to "memory" issues

NiMh batteries don't suffer from the memory effect that plagued NiCad batteries.

Nimh is less susceptible than NiCd, but the same effect for the same reasons occurs . . . it's due to crystal formation on the Nickel part of the cell chemistry I believe . . . not that it matters, NiMh is the only AA rechargable cell that you should buy . . .

I bought a load of Fujicell AA NiMh 2800mAh cells off ebay at about this time last year about 12 quid for 8 of them, they have been (and are) great, good capacity, been using them in flash and portable video recording kit for a year . . .

I think it's worth using them and charging them in matching sets, helps prevent cell reversal issues

Fd

sourced from Duracell Techy info....

5.9 Voltage Depression (“Memory Effect”)
Although many years of premium performance
can be enjoyed from a nickel-metal hydride battery that
is properly handled, the capacity delivered in each
charge/discharge cycle will eventually begin to decrease.
This inevitable decrease in capacity can be accelerated by
overcharging, storage or usage at high temperatures, or
through poor matching of cells within a pack. Often,
battery users who experience short service life have
incorrectly attributed capacity loss to a phenomenon
called “memory effect.”
The term memory effect is used synonymously
with the term “voltage depression.” Voltage
depression is a scientifically measurable characteristic of
all batteries, however, nickel-cadmium batteries demonstrate
particularly acute sensitivity. A properly designed
application with nickel-metal hydride batteries will result
in neither permanent performance loss nor perceivable
temporary capacity decreases from this characteristic.
A reversible drop in voltage and loss of capacity
may occur when a nickel-metal hydride battery is partially
discharged and recharged repetitively without the
benefit of a full discharge, as illustrated in Figure 5.9.1.
After an initial full discharge (Cycle #1) and charge, the
cell is partially discharged to 1.15 volts and recharged
for a number of cycles. During this cycling, the discharge
voltage and capacity drop gradually in very small
increments (Cycles #2 to #18). On a subsequent full
discharge (Cycle #19), the discharge voltage is
depressed compared to the original full discharge
(Cycle #1).
Because the cell appears to “remember” the
lower capacity, this voltage depression phenomenon is
often referred to as memory effect. However, the cell
can be quickly restored to full capacity with a few full
discharge/charge cycles, as indicated in Cycles #20
and #21.
The voltage drop occurs because only a portion
of the active materials in the cell is discharged and
recharged during shallow or partial discharging. The
active materials that have not been cycled change in physical characteristics and increase in resistance.
Subsequent full discharge/charge cycling will restore the
active materials to their original state.
The extent of voltage depression and capacity
loss depends on depth of discharge and can be avoided by
discharging the battery to an appropriate cutoff
voltage. Voltage depression is most apparent when the
discharge is terminated at higher cutoff voltages, such as
1.2 volts per cell. A smaller voltage depression and
capacity loss occurs if the discharge is cut off between
1.15 volts to 1.10 volts per cell. Discharging to 1.0
volts per cell should not result in significant voltage
depression or capacity loss during subsequent discharges.
A device properly designed with nickel-metal
hydride batteries will minimize the effects of voltage
depression and capacity loss. The voltage depression
and capacity loss in DURACELL nickel-metal hydride
batteries is only a small fraction (less than 5 percent
in worst cases) of the battery’s capacity and most users
will never experience a perceptible performance loss.

http://www1.duracell.com/oem/Pdf/others/nimh_5.pdf

[jon-]

http://photography-on-the.net/forum/showthread.php...

[fergusd]

ian in lancs said:

fergusd said:

ian in lancs said:

Pints said:

I suggest getting a hyrid type rechargeable. They retain charge better and are less susceptible to "memory" issues

NiMh batteries don't suffer from the memory effect that plagued NiCad batteries.

Nimh is less susceptible than NiCd, but the same effect for the same reasons occurs . . . it's due to crystal formation on the Nickel part of the cell chemistry I believe . . . not that it matters, NiMh is the only AA rechargable cell that you should buy . . .

I bought a load of Fujicell AA NiMh 2800mAh cells off ebay at about this time last year about 12 quid for 8 of them, they have been (and are) great, good capacity, been using them in flash and portable video recording kit for a year . . .

I think it's worth using them and charging them in matching sets, helps prevent cell reversal issues

Fd

sourced from Duracell Techy info....

<snip DURACELL marketing diatribe>

I stand by my comment, just because DURACELL say you won't notice it with DURACELL cells in some DURACELL marketing bull doesn't mean it doesn't happen . . . FFS

NiMh suffer from memory effect for the same reason as NiCd do, NiCd are worse, but that isn't the point.

Time to do some rather less blinkered research methinks . . .

Fd

[ian in lancs]

fergusd said:

ian in lancs said:

fergusd said:

ian in lancs said:

Pints said:

I suggest getting a hyrid type rechargeable. They retain charge better and are less susceptible to "memory" issues

NiMh batteries don't suffer from the memory effect that plagued NiCad batteries.

Nimh is less susceptible than NiCd, but the same effect for the same reasons occurs . . . it's due to crystal formation on the Nickel part of the cell chemistry I believe . . . not that it matters, NiMh is the only AA rechargable cell that you should buy . . .

I bought a load of Fujicell AA NiMh 2800mAh cells off ebay at about this time last year about 12 quid for 8 of them, they have been (and are) great, good capacity, been using them in flash and portable video recording kit for a year . . .

I think it's worth using them and charging them in matching sets, helps prevent cell reversal issues

Fd

sourced from Duracell Techy info....

<snip DURACELL marketing diatribe>

I stand by my comment, just because DURACELL say you won't notice it with DURACELL cells in some DURACELL marketing bull doesn't mean it doesn't happen . . . FFS

NiMh suffer from memory effect for the same reason as NiCd do, NiCd are worse, but that isn't the point.

Time to do some rather less blinkered research methinks . . .

Fd

precisely...

[The_Jackal]

Here's my advice from the world of RC where we go through batteries like a dose of the thrupnies.
VAPEXTECH

Look it up on eBay, you wont regret it.

[carlosfandango]

The_Jackal said:

Here's my advice from the world of RC where we go through batteries like a dose of the thrupnies.
VAPEXTECH

Look it up on eBay, you wont regret it.

Roman Catholics use batteries?