Rechargeable D Cells In 2024

[kilogulf59]

@Sarratt Nice radio. I may be wrong here, however I think it's the following (and I am not a mathematician).

mAh per cell X number of cells in each parallel adapter = total mAh per adapter. Divide that by current draw in mA.

In my case, I'm using single AA to D adapters and Eneloops. Supposedly those have 2000 mAh capacity. My radio draws 40 to 50 mA.

2000 / 50 = 40 hours (in a perfect world)

In your case and I do not know what your radio's power consumption is so I'm just using 50 mA.

2450 x 3 = 7350 mAh per adapter
7350 / 50 = 147 hours (in a perfect world)

From C.Crane's website under General Features: "Runs on included 6V AC Adapter or (4) D batteries. Runs for approx. 175 hours at moderate volume with display light off."

 

[Sarratt]

Thanks very much kilogulf59. Your math is far better than mine.
I must have confused the 300 hours with another when I was shopping for the radio.
140 hours (roughly) is far more than I was hoping.
I did see your post about the difficulty in recharging 12 cells ... but I have so many rechargeable AA's that I couldn't justify buying 4 D cell rechargeables just for one device.
Thanks again

 

[kilogulf59]

Glad to help.

 

[radellaf]

Aside from cells previously mentioned, has anyone any experience with EBL D cells? These have a claimed 10000 mAh run time and seem reasonably priced.

Yes, I have about equal Tenergy Centura and EBL D (and C) plus some Amazon green & black.

It has been about 5 years and they're all working fine. None have developed high self discharge.
Initial tests, the 10Ah maybe more like 9, and none exceeded their ratings, but all were fairly close to each other and no duds.

I also have a bunch of 3AA parallel adapters, and a couple of 2AA ones. They're fine but there's something nice about actual D cells. At least with a radio you don't have to worry about a little extra contact resistance in the adapters. Sometimes they don't fit as well - more likely to want to pop out on you. I forget which radios, I have a handful of Sangeans with D & C, the Sony ICF-19, plus some no-known-name portables.