Chargers for C or D batteries

If you use any types of rechargeable C or D batteries, do you use C or D batteries, or do you use the AA eneloop batteries with the C or D spacers?

If you use C or D rechargeable batteries, what brands of batteries and chargers are good?

I have a Sanyo Eneloop charger for 4 AA batteries which works fine. I also have an Energizer charger that will charger various sizes of batteries. The problem with this charger is when charging AA batteries in pairs, they don't fit snugly causing the top one to slip out. So I'm looking for a better (and safer) charger that will accommodate all sizes of rechargeable batteries. Thank for any info.

The only devices I own that use a "large" battery is a clock and 2 Maglite flashlights, and I've replaced the C & D size batteries with an Eneloop AA battery and Spacers...

I use the c and d spacers for some gadgets I have. They are not real power hungry devices that I use them in. I haven't looked a rechargeable c and d cells in years, but there was a big difference in some. Many of them were simply a AA cell with a permanent, mostly empty spacer around them. You can tell what is in it by the mAh - milliamp hours. That's how much current it can supply for one hour. if you look at a D cell and it is 10000mah, that's got some 'stuff' inside. If it is in the range of 2500mah, then there is just a AA cell hidden inside. The spacers can be a pain sometimes though.

FredKingston said:

The only devices I own that use a "large" battery is a clock and 2 Maglite flashlights, and I've replaced the C & D size batteries with an Eneloop AA battery and Spacers...

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I have at least 2 clocks as well as a few flashlights that take C or D batteries. Not a lot of items, but enough for me to consider getting dedicated batteries for them. Thanks, Fred.

nickt said:

I use the c and d spacers for some gadgets I have. They are not real power hungry devices that I use them in. I haven't looked a rechargeable c and d cells in years, but there was a big difference in some. Many of them were simply a AA cell with a permanent, mostly empty spacer around them. You can tell what is in it by the mAh - milliamp hours. That's how much current it can supply for one hour. if you look at a D cell and it is 10000mah, that's got some 'stuff' inside. If it is in the range of 2500mah, then there is just a AA cell hidden inside. The spacers can be a pain sometimes though.

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Thanks for the info, Nick. I appreciate knowing the difference in strength between the AA batteries vs. the larger ones. Do you know anything about 9-volt? Can't remember if I have any rechargeable ones, but our smoke detectors take them as well as battery backups for electric clocks plus our radios take 9-volt batteries, too.

The choice was simple for me... the clock and flashlights were the odd balls... we have dozens of devices that all use AA batteries... cameras, speedlights, and hundreds of remotes... standardizing on one was our solution...

I have one 9v rechargeable battery, radio shack, I think. I've had it for years and it keeps going. I forget what tool I have it in, it moves around. I have a few tools (meters, laser levels, etc) that I might only use once a year, but when I do, I'll kill the battery in a weekend. For smoke alarms, I would go with a normal alkaline battery, never a rechargeable. There are fancy lithium 9v batteries now. Not needed for most things, but there are some devices that would benefit from a more powerful 9v battery. Portable radios are worth running on a rechargeable 9v if you use them often. I'm a radio guy, I need news talk on if I am near the house, but I've moved to radios with AA batteries and use eneloops.

Same deal with 9v rechargeable, some have more capacity. I keep one old charger around that can charge a 9v battery. The 9v regular and rechargeable are relatively low capacity. you'll find them from 250mah to maybe 800mah capacity. A regular disposable 9v alkaline is probably only 500mah. There are 6 or more tiny cells in both the rechargeable and regular 9v batteries. The voltages of those little cells add, but not the mah capacity of the cells. What is inside compares to low quality AAA cells. Not great batteries, but we are stuck with them. Much more power in AA.