fall inside a hole

My battery collection

Although I did not initially set out to collect old batteries, I gradually found more in old toys and electronics that had interesting designs or were simply old and/or from other markets, and it seemed a bit of a shame to throw some of them away, so I have kept some of the more interesting and nicer-surviving batteries I have come across. I am also, as always, interested in the differences in the external design and construction over time.

National/Panasonic

Panasonic (known as National in Japan, both consumer brands of Matsushita) had a very distinctive red and later also black series of "Hi-Top" batteries throughout the 1970s and 1980s, carrying into the 1990s.

Front Side/Rear Side/Rear   Description
Shiny American Panasonic Long Life C battery with Good Housekeeping guarantee. No production mark on the bottom
1977 production Long Life National NEO Hi Top that originally sold for 75 yen
  1984 production Japanese market National Hi-Top AA
  1985 production National Hi-Top AA (note that the positive mark is now fully circled)
  1988 production Seiko-marked AA Hi-Top
  Regular 1988-1989 Japanese market AA Hi-Top
September 1989 production black Japanese market National NEO Hi-Top
1991 American market Panasonic Special C made in Belgium
  1990s Japanese market Panasonic Alkaline C battery
  A black Neo Hi-Top AA dated 2003
  Cheaper American market Panasonic General Purpose zinc-carbon batteries probably from the later 1990s or 2000s
  European market Panasonic PowerMax 3 from the early 2000s
  Earlier 2000s style of Panasonic Alkaline Plus
  Early 2000s Japanese market Panasonic Alkaline AA

Late 2000s-early 2010s National Neo C battery, still made in Japan
  Late 2000s Japanese Panasonic Alkaline
  2010s Panasonic Alkaline AA
  Panasonic Evolta AA from the earlier 2020s 
  Late 2010s-2020s Japanese market long-life Panasonic Evolta C
  A Panasonic Super Heavy Duty AA carbon-zinc
  Panasonic carbon-zinc batteries are still sold in dollar stores in the US
    Packaging for the current Panasonic-branded carbon-zinc AAs. Four for $1.25

Duracell

Started by a scientist and businessman partnership in the 1920s as the P. R. Mallory Company, the Duracell brand was introduced in 1964 and went public in the late 1980s, being later bought by Gillette in the 90s and they in turn Procter & Gamble in the 2000s.

Front Side/Rear Side/Rear   Description
  An old Mallory Duracell predating the "copper top" design. Its degrading, but I've held onto it because its the oldest one I've come across
  1990s Duracell AA marked as best installed by January 2000 
  An OEM version of the Duracell AA from a little bit after 
Late 1990s Duracell D battery with Powercheck bar - this was a built-in way to test if the battery still had capacity
 Powercheck video
  An OEM Duracell battery included with some product circa 2017
  Duracell Quantum, first released in 2013, often (always?) still feature the Powercheck meter

Rayovac

Originally started as the French Battery Company in 1906 and renamed Ray-O-Vac in 1930 following the rise of vacuum tubes. In the early 2000s the brand diversified before going bankrupt in 2009 and eventually selling the battery division to Energizer in 2018.

Front Side/Rear Side/Rear   Description
  Early-mid 1990s Rayovac Alkaline Maximum AA
  Another variation of the Rayovac Maximum AA
  Rayovac Alkaline AA from the later 2000s - this is how I remember them looking for much of the later 2000s

Eveready/Energizer

The Eveready Battery Company was formed in New York in 1905 as the American Ever Ready Company selling flashlights and batteries. In the 1980s most Eveready batteries were renamed Energizer and the company was sold and eventually spun off independently as Energizer Holdings in 2000, acquiring Rayovac in 2018.

Front Side/Rear Side/Rear   Description
  An Eveready C battery from the late 1970s
  An early 1980s Eveready Energizer alkaline C battery
  Late 1990s or early 2000s Energizer 9 volt, still carrying the stripes of those that came before it with the more modernized logo
  Late 2000s-early 2010s Energizer AA
  Breast cancer pink late 2000s Energizer AA - they did a pink version of the 2010s style AAs as well
  Energizer Industrial C battery

Store Brands

Meijer

Meijer is a chain of supercenter stores based primarily in Michigan and the midwest that sells groceries, electronics, housewares, clothing, and other common goods.

Front Side/Rear Side/Rear   Description
  Meijer Extra Heavy Duty AA found in a circa 1985 Robotix toy
  The 2000s Meijer Powercell Alkaline design I remember buying often

Eneloop

and Nickel-Metal Hydride (NiMH) rechargeables

First developed by Sanyo and Tomy as "Every Denchi" (エヴリデンチ) specifically for use in toys and released in 2003 (because apparently all roads lead to Tomy...), Sanyo developed the "modern" consumer rechargeable battery in the 2000s and released the first generation of Eneloop nickel-metal hydride type rechargeables batteries in 2005. In late 2008 Panasonic announced plans to acquire a controlling share of Sanyo and bring it in as a subsidiary. Eneloop batteries were apparently the last product still sold under the Sanyo name in Japan for a time, with other products being discontinued or rebadged as Panasonic before Eneloops were integrated into Panasonic's battery range alongside their existing Evolta range. In addition to slightly increased capacity over the generations as well as larger C and D types with appropriate capacities they all feature pretty good charge retention, and they often come pre-charged. In the last few years I have seen more retail and store brands selling NiMH rechargeables and they can be bought online in many sizes and combinations. I remember using nickel-cadmium style rechargeables as a kid with toys that chewed through batteries (mostly Rokenbok) and nowadays I pretty much only use these types of rechargeables in my toys and devices. Passive diameter-adapters are sometimes included with sets of these batteries to let them power C and D-cell devices (the C and D sizes are only sold directly to some markets, although they can be bought online). I balk at the prospect of paying for one-time-use batteries to play with in my own toys and would much rather employ a small fleet of these batteries and chargers

Front Side/Rear Side/Rear   Description
  Blue "second generation" Eneloops from Sanyo