Average Reviews:
(More customer reviews)The two rechargeable batteries in this package (SANYO Eneloop Spacer Packs with 2 AA with 2 D-Size Spacers) are the best-quality low-self-discharge NiMH cells currently available. The two spacers are made of high quality plastic without any rough edges, and they looked great. The price is also very reasonable. So normally I would call this a good deal. However, if you intend to use them in appliances that accept D-cells, please beware of the following limitations:
1. The capacity of each eneloop AA cell is just 2,000mAh. In contrast, capacity of a typical alkaline D-cell (such as the Energizer E95) is rated at around 20,000mAh when delivering a low current of 50mA. For a larger load current of 500mA, its capacity drops to around 10,000mAh. Still, this is five times the capacity of eneloop AA cell. What this means is that: you need to remove and recharge your eneloop cells five times more frequently, compared to when using alkaline D cells.
2. The base of the D-spacer is hollow. It uses the negative terminal of the AA cell for contact. The battery compartment designed for normal D-cells typically have much larger springs, so the base of the AA cell may fail to make contact with the spring. Check the picture I uploaded to the Customer Image section, and you'll see what I mean. This problem can often be solved by inserting a copper penny or nickel between the battery base and the spring. But it does not always work.
There are some other rechargeable D-cell options available. For example, consider the Rayovac Platinum LSD NiMH D cells. This package is currently priced similar to the eneloop package, but it gives you two real D-sized cells, with 50% higher capacity (3000mAh vs 2000mAh). The down-side is that you'll need a battery charger that can handle D-cells.
If longest run time is your first priority, then consider buying full-capacity D cells such as the 9500mAh IMEDION D Rechargeable Batteries. Those are priced 3-4x higher, and you need an expensive charger that can handle full-capacity D-cells. (Most low-cost chargers cannot fully recharge cells with capacity over 3000mAh)
No matter which option you pick, using rechargeable batteries will save you money in the long run. You just have to know your batteries' limitations, and set your expectation accordingly.
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These Sanyo eneloop batteries include AA, 2000 Mah, D Size Spacer Packs. They retain 85% capacity after 1 year of storage and it includes 2 AA batteries with D-size spacers.
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