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2. Deep-cycle battery - Wikipedia

   en.wikipedia.org/wiki/Deep-cycle_battery

   A deep-cycle battery powering a traffic signal. A deep-cycle battery is a battery designed to be regularly deeply discharged using most of its capacity. The term is traditionally mainly used for lead–acid batteries in the same form factor as automotive batteries; and contrasted with starter or cranking automotive batteries designed to deliver only a small part of their capacity in a short ...

3. List of battery sizes - Wikipedia

   en.wikipedia.org/wiki/List_of_battery_sizes

   Sometimes were sold as B batteries. 67.5-volt: Eveready 416: 217: 140: 67.5 V (45 cells) Both on same end: H: 88 L: 33 W: 25 Used in older instruments. [250] Many of these were sold as B batteries for early transistor radios (before their function was replaced by the 9-volt PP3 battery).

4. Trickle charging - Wikipedia

   en.wikipedia.org/wiki/Trickle_charging

   Trickle charging is the process of charging a fully charged battery at a rate equal to its self-discharge rate, enabling the battery to remain at its fully charged level. This state occurs almost exclusively when the battery is not loaded, as trickle charging will not keep a battery charged if current is being drawn by a load.

5. 10 Can’t Miss Black Friday Electronics Deals at Costco - AOL

   www.aol.com/10-t-miss-black-friday-000031672.html

   This 13.6″ liquid retina display MacBook Air weighs only 2.6 pounds and has 18 hours of battery life. Other noteworthy features include a 1080p FaceTime HD camera, a three-mic array, and a four ...

6. Nickel–zinc battery - Wikipedia

   en.wikipedia.org/wiki/Nickel–zinc_battery

   Nickel–zinc batteries have a charge–discharge curve similar to 1.2 V NiCd or NiMH cells, but with a higher 1.6 V nominal voltage. [5]Nickel–zinc batteries perform well in high-drain applications, and may have the potential to replace lead–acid batteries because of their higher energy-to-mass ratio and higher power-to-mass ratio – as little as 25% of the mass for the same power. [6]

7. Charge cycle - Wikipedia

   en.wikipedia.org/wiki/Charge_cycle

   Discharging the battery fully before recharging may be called "deep discharge"; partially discharging then recharging may be called "shallow discharge". A "charge cycle" is not a unit of time; the length of time spent charging or discharging does not affect the number of charge cycles. [1] Each battery is affected differently by charge cycles ...