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Would you stake your life, right now, on the condition of your equipment?
NEWS | Aug. 19, 2022

Radio Test Sets: Lithium Batteries Not Always Best

BLUF: Using lithium batteries can damage the AN/PRM-36 radio test set.

Lithium batteries
Courtesy photo
This article initially appeared in PS 799, p. 51 (Jun 19).

Dear Half-Mast,

On Page 47 of PS 764 (Jul 16), you had an article about allowable battery types for the AN/PRM-36 radio test set, NSN 6625-01-581-8105. You warned against using lithium batteries. Does this mean lithium rechargeable batteries, non-rechargeable or both? What’s the reason?
Mr. W.C. 

Dear Sir,

We sing the praises of lithium batteries a lot. But there are exceptions. The AN/PRM-36 radio test set is one of them.
The warning applies to both rechargeable and non-rechargeable lithium batteries. The reason is that AA cell lithium batteries come in various voltages up to 3.7V, but the AN/PRM-36 radio test set is designed for an AA cell battery with a 2.0 volt maximum.
Battery cautions and replacement instructions are covered in WP 0021* of TM 9-6625-1697-10** (Nov 13, w/Ch 1, Jun 14).
Notes: *The WP states that three AA batteries are required to operate the test set. The set comes with three rechargeable high capacity AA nickel metal hydride batteries. Alkaline batteries also work. Nickel cadmium batteries can also be used, but aren’t recommended since they require HAZMAT disposal. Caution: Using the wrong batteries can damage the test set.
**The TM link has changed from the original article. Download the TM from the Logistics Data Analysis Center’s ETM/IETM section HERE.
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