However, lithium-ion (Li-ion) rechargeable batteries offer certain advantages in some cases, so we also tested them for people who need the extra voltage they provide (1.5 V compared with 1.2 V). NiMH chemical composition: Nickel metal hydride (NiMH) batteries are the gold standard in AA and AAA rechargeables to date, so we focused primarily on this variety.As required by our testing criteria, all four of our Li-ion picks are low self-discharge batteries, and they’re rated to last at least 1,000 charge/discharge cycles. Although they have nominally different capacity ratings and charge differently-the black EBL batteries charge via a Micro-USB port on the sides of their barrels, and the red ones can be charged normally in any charger that’s compatible with Li-ion batteries-they fared about the same in our testing. Similar to their NiMH brethren, multiple Li-ion AA and AAA batteries tied for first in our testing: EBL’s black- and red-labeled AA batteries, as well as its black and red AAAs. If you own such a device (and if you’re unsure, it’s most likely listed on the bottom of the device or in the manual), you can use a rechargeable Li-ion battery instead of a disposable lithium or alkaline, since all three operate at a constant 1.5 volts. If you do need a charger for your application, you can browse our selection here.Some electric toothbrushes, digital cameras, and more require a slightly higher voltage than the 1.2 volts that NiMH batteries can provide. Generally you will want a charger that is ~10% of the capacity rating of the battery (at a 20hr rate).įor example, if you wanted to charge a 12 volt, 20 Ah battery, you would select a 12 volt charger with a 2 amp charging output (20 x 0.10 = 2). You shouldn't need to take the battery out and put it on a charger. Some applications will charge the SLA battery automatically, like alarm or backup systems. What charger should I use for my SLA battery? Always make sure the voltage matches your original battery and measure your original battery to ensure that it will fit the area the battery will be installed.
Please know that the battery size may change with a higher capacity.
Or, even our 12 Volt, 9 Ah battery (Item # SLA-12V9-F2) can be used with these units, as both batteries are the same size and voltage. For example, many UPS units use our 12 Volt, 7 Ah battery (Item # SLA-12V7-F2), and these can be as high as 7.6 Ah in capacity. When selecting a replacement, the voltage and dimensions should match your original battery.
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