Which battery types are commonly used in field radios?

• A. Lithium-ion and nickel-based cells
• B. Lead-acid car batteries
• C. Alkaline disposable cells
• D. Solid-state hydrogen cells

Answer: (A)

Field radios need power sources that are light, compact, and able to deliver bursts of current without overheating in varied conditions. Lithium-ion cells deliver high energy per weight, helping keep the radio portable while still providing enough run time. Nickel-based cells, such as NiCd or NiMH, offer rugged performance, reliable discharge under heavy loads, and good tolerance to wide temperatures, which is valuable in field environments. Together, these chemistries cover the demands of portable radio operation: light enough to carry, capable of sustaining transmission, and robust across temperature swings.

Alkaline disposable cells aren’t rechargeable and can’t maintain stable voltage under the high current of a radio transmitter. Lead-acid car batteries are far too heavy and bulky for field-portable radios. Solid-state hydrogen cells aren’t standard for compact field radios and require special infrastructure. That’s why lithium-ion and nickel-based cells are the commonly used types in field radios.