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2. 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]

3. List of vacuum tubes - Wikipedia

   en.wikipedia.org/wiki/List_of_vacuum_tubes

   4.8 12 volt heater tubes. 4.9 "14" prefix ... 0.625 V DC directly heated for NiCd battery, ... (the E80F is commonly sought after as a high quality replacement for ...

4. Battery charger - Wikipedia

   en.wikipedia.org/wiki/Battery_charger

   A battery charger, recharger, or simply charger, [1] [2] is a device that stores energy in an electric battery by running current through it. The charging protocol—how much voltage , amperes, current, for how long and what to do when charging is complete—depends on the size and type of the battery being charged.

5. Comparison of commercial battery types - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_commercial...

   (85–190) [12] 0.90–1.56 (250–434) [12] 50 [12] 0.39 (2574) [12] 45–85 [12] 0.17 [12] 5–10 [4] Rechargeable alkaline: RAM KOH Yes 1992 [13] 0.9 [14] 1.57 [14] 1.6 [14] <1 [13] Silver-oxide: SR NaOH/ KOH Silver oxide: No 1960 [15] 1.2 [16] 1.55 [16] 1.6 [17] 0.47 (130) [17] 1.8 (500) [17] Nickel–zinc: NiZn KOH Nickel oxide hydroxide ...

6. List of battery sizes - Wikipedia

   en.wikipedia.org/wiki/List_of_battery_sizes

   This battery, introduced in 1901, was very common in continental Europe until the 1970s. It usually contains three B cells in series. In Switzerland as of 2008, 4.5-volt batteries account for only 1% of primary battery sales. [89] PP3, 9-volt, or E [90] Radio battery Smoke alarm battery Square battery Transistor battery 006P MN1604

7. Battery pack - Wikipedia

   en.wikipedia.org/wiki/Battery_pack

   Lead-acid automobile battery pack consisting of 28 Optima Yellow Tops Lithium-ion battery pack for Lucid Motors. A battery pack is a set of any number of (preferably) identical batteries or individual battery cells. [1] [2] They may be configured in a series, parallel or a mixture of both to deliver the desired voltage and current. The term ...