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2. Rechargeable battery - Wikipedia

   en.wikipedia.org/wiki/Rechargeable_battery

   Several alternatives to rechargeable batteries exist or are under development. For uses such as portable radios, rechargeable batteries may be replaced by clockwork mechanisms which are wound up by hand, driving dynamos, although this system may be used to charge a battery rather than to operate the radio directly.

3. AN/PRC-77 Portable Transceiver - Wikipedia

   en.wikipedia.org/wiki/AN/PRC-77_Portable_Transceiver

   The AN/PRC-77 entered service in 1968 during the Vietnam War as an upgrade to the earlier AN/PRC-25.It differs from its predecessor mainly in that the PRC-77's final power amplifier stage is made with a transistor, eliminating the only vacuum tube in the PRC-25, as well as the DC-DC voltage converter used to create the high plate voltage for the tube from the 15 V battery.

4. Clansman (military radio) - Wikipedia

   en.wikipedia.org/wiki/Clansman_(military_radio)

   Manpack and Portable Stations. Re-chargeable batteries were supplied for all of the portable range of radios. The PRC 344, PRC 351, 351/2 and PRC 320 all shared the same common battery – the 24 Volt 3.3 ampere hour Nickel Cadmium type later upgraded to 4 ampere hour (or Ah), and ultimately 5 Ah due to advances in battery manufacture.

5. AN/PRC-113 - Wikipedia

   en.wikipedia.org/wiki/AN/PRC-113

   AN/PRC 113 Radio Set is a manpack, portable VHF and UHF AM combat radio transceiver ... BA-5590/U non-rechargeable or BB-2590/U and UBI-2590 rechargeable batteries.

6. AN/PRC-152 - Wikipedia

   en.wikipedia.org/wiki/AN/PRC-152

   The AN/PRC-152 Multiband Handheld Radio, is a portable, compact, tactical software-defined combat-net radio manufactured by Harris Corporation. [1] It is compliant without waivers to the Joint Tactical Radio System (JTRS) Software Communications Architecture (SCA). [2] [3] It has received NSA certification for the transmission of Top Secret data.

7. Transistor radio - Wikipedia

   en.wikipedia.org/wiki/Transistor_radio

   The typical portable tube radio of the fifties was about the size and weight of a lunchbox and contained several heavy, non-rechargeable batteries—one or more so-called "A" batteries to heat the tube filaments and a large 45- to 90-volt "B" battery to power the signal circuits. By comparison, the transistor radio could fit in a pocket and ...