recommendations for good (lithium maybe) rechargeable AA

[herbeapuce]

Hi . I bought this vintage portable radio ( Panasonic RF2200) and it works with 4 D size battery. so I guess I will have to buy a 3AA to 1D converter casing...
my Battery charger is a nitecore.

what are the good rechargeable lithium AA battery to buy ? best ratio price/quality plz, I guess I'm stocked with AA right ?

thanks for your help
a picture of my charger included.
Stef, Montreal

 

[caelyx]

What a great piece of recent radio history!

Your best option is probably Eneloop AA batteries, in those 3AA-to-D adapters. Your Nitecore charger can recharge them, and they'll give you decent runtime. There are similar batteries available as IKEA Ladda brand, as well as some of the major battery brands (e.g., Energizer).

As background: you want nickel metal hydride (NiMH) - like the Eneloops - rather than lithium ion rechargeable batteries, because of the different voltages involved. A normal (alkaline) AA puts out 1.5 volts when fresh; NiMH is 1.2 volts which is close enough for nearly everything. By contrast, Lithium ion is 4.2 volts and that much voltage is enough to break many kinds of electronics designed for traditional alkaline batteries.

 

[herbeapuce]

thank you caelyx.
much appreciated.
yes I love the radio....
stef.