![]() ![]() ![]() While single-use batteries are convenient, they are exactly that: Use them one time dispose of them. Thus we conclude three weeks of rechargeable battery columns. There's more profit in selling single-use batteries than in selling plastic sleeves for rechargeables at $1 or $1.50 each. The point is, I've never seen these spacers for rechargeable batteries sold in brick-and-mortar stores. It's even possible to find adapter spacers that will convert AAA rechargeables into a C or D battery size. (Yes, it's cheaper to buy the two aforementioned offers than it is the combined one.) For some of each, there is a package deal: Four C adapters and four D adapters for $20. There are also six D-size sleeves offered for $8. A set of 10 C-size ones are sold on Amazon for $10. The AA battery is inserted into the sleeve, which comes with a filler to hold the smaller battery in place in its new, oversize slot in the electronic gadget. Think of the spacers as a sumo-wrestling costume that makes the wearer look more like a helium balloon than a person. The spacers come in two sizes to make a AA into a C- or D-cell battery. The run time will be reduced, but the cost of replacing a single-use battery won't be there. The flashlight or whatever will still be as bright or work as well. How does that work? There are "spacers" available for AA batteries: Simply put the AA in the spacer - which come in sizes for C- and D-cell batteries - and insert them into whatever electronics the C- or D-cells were powering. The answer to the flashlight riddle, then, is this: The larger batteries that once ran the flashlight have been replaced with smaller AA batteries. Lost an old Master Lock combination? There's a process to retrieve it.A flashlight for the masses? Small LED proved indispensable during hurricane.Rechargeable batteries perform as well as alkalines, without the corrosion.Top battery chargers for the simple person or the tinkerer.These batteries are so expensive that one website selling them offers: "Pay in four interest-free installments for orders over $50.00." (Other brands are available for about $15 for two - but they'll need a D-cell charger, which adds to the cost.) And they are expensive: a two-pack of D batteries that recharge using a built-in USB port is $30 online. Finding C- and D-cell rechargeables is far more difficult. And there are good ones that match the performance of national brands, but without the price tag. Rechargeable AA and AAA batteries are common. ![]() When I started the change-over from using alkaline batteries - which are sometimes prone to leak and thereby corrode the electronics they power - for rechargeable ones (which are far more economical and rarely leak), I didn't know the answer to that riddle either. Riddle me this: I have a flashlight that uses D-cell batteries. ![]()
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