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2. Comparison of commercial battery types - Wikipedia

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

   V V V MJ/kg (Wh/kg) MJ/L (Wh/L) W/kg Wh/$ ($/kWh) % %/month years Lead–acid: SLA VRLA PbAc Lead: H 2 SO 4: Lead dioxide: Yes 1881 [1] 1.75 [2] 2.1 [2] 2.23–2.32 [2] 0.11–0.14 (30–40) [2] 0.22–0.27 (60–75) [2] 180 [2] 5.44–13.99 (72–184) [2] 50–92 [2] 3–20 [2] Zinc–carbon: Carbon–zinc Zinc: NH 4 Cl Manganese (IV) oxide ...

3. List of battery sizes - Wikipedia

   en.wikipedia.org/wiki/List_of_battery_sizes

   A Battery: Eveready 742: 1.5 V: Metal tabs H: 101.6 L: 63.5 W: 63.5 Used to provide power to the filament of a vacuum tube. B Battery: Eveready 762-S: 45 V: Threa­ded posts H: 146 L: 104.8 W: 63.5 Used to supply plate voltage in vintage vacuum tube equipment. Origin of the term B+ for plate voltage power supplies.

4. Lithium-ion battery - Wikipedia

   en.wikipedia.org/wiki/Lithium-ion_battery

   A lithium-ion or Li-ion battery is a type of rechargeable battery that uses the reversible intercalation of Li + ions into electronically conducting solids to store energy. In comparison with other commercial rechargeable batteries, Li-ion batteries are characterized by higher specific energy, higher energy density, higher energy efficiency, a longer cycle life, and a longer calendar life.

5. Battery pack - Wikipedia

   en.wikipedia.org/wiki/Battery_pack

   [11] [12] The theoretical mAh of a 3.7 V battery power bank with 5 V output is 74% of the battery mAh rating. The RavPower RP-PB41 with advertised capacity of 26,800 mAh that was evaluated in the journal has a theoretical capacity is 19,832 mAh, although the delivered capacity was 15,682 mAh, 78% of theoretical value.

6. Nickel–cadmium battery - Wikipedia

   en.wikipedia.org/wiki/Nickel–cadmium_battery

   Thomas Edison patented a nickel– or cobalt–cadmium battery in 1902, [3] and adapted the battery design when he introduced the nickel–iron battery to the US two years after Jungner had built one. In 1906, Jungner established a factory close to Oskarshamn, Sweden, to produce flooded design Ni–Cd batteries.

7. Nine-volt battery - Wikipedia

   en.wikipedia.org/wiki/Nine-volt_battery

   Nine-volt battery snap. The PP3 battery has both terminals in a snap connector on one end. The smaller circular (male) terminal is positive, and the larger hexagonal or octagonal (female) terminal is the negative contact. The connectors on the battery are the same as on the load device; the smaller one connects to the larger one. [5]