"figsys" wrote in message
ups.com...
There is no built in charger.

Note that AA NiMH such as the Sony are rated at 1.2V while alkalines
and other non-rechargeables put out 1.5V. Perhaps the Sangean needs a
minimum voltage to turn on, something closer to what the lower powered
NiMH generate. I have not yet measured the actual voltages under
load.

F.

Yes I realize that but you were talking about old and new NiMH batteries,
one set being 2000 mAh and the new ones bing 2500 mAh. If it was working
with the 2000 mAh NiMH batteries, there should be no problem using the 2500
mAh batteries as long as they have the same rated voltage. If for some very
strange reason the v out of the batteries is different under load, then that
may be what is causing the problem. In that case, I would make a
distinction, in my opinion, that the new batteries are not infact working
according to the claimed specifications. You can measure the load voltage
presumeably by going across the battery terminals with a dvm while the radio
is on and do a comparison, or in this case have someone hold the power
button down while you attempt to measure the voltage. It could be you have
a bad battery, or just plain old junk batteries, or some that as I said
before, not performing to the claimed specs. In that case, I would return
them and find a better brand of battery.
B

On Apr 15, 7:33 pm, "Brian O" wrote:
"figsys" wrote in message

ps.com...

Have a strange problem with Sangean DT200V. Radio is great but I can
only use one type of AA NiMH rechargeable - older Powerizer 2000 MaH.
With newer and higher current AA's (eg., Sony 2500 MaH) radio don't
turn on (The DT200V has electronic on switch). Is there something in
the Sangean that senses the differences in batteries?

Thanks!

As long as the voltage of the batteries is the same, it should make no
difference. Does it have a charger built in for NiMH batteries as well?
B