" Uncle Peter" wrote in
news:mfoWe.79973$DW1.35378@fed1read06:

BA-3042/u
used on
Multimeter
AN/ USM - 223
Countermeasure set
AN/SLQ - 48
GPS 5 Navstar receiver set
AN/ ASN - 149
Flight line test set
AN/ ALM - 154
Maintenance facility group
AN/ TYA - 28
Test set
MK 272 MOD 1
Howitzer medium, 155 mm
M - 109 A3
Applications

BUT, it's NOT a 1/2-height D cell.
Nomenclature Primary ALKALINE Manganese Dioxide
battery
Nominal Dimensions D: 25.4 mm H: 47.63 mm
Nominal Weight 68 gr
Nominal Voltage 1.5 V
Discharge Load 16.67 Ohm continuously until 0.9 V
Cutoff Voltage 0.9 V
Terminals 2 Flat Surfaces
Operating Temperature Range -20...... +55oC
Storage Temperature Range 0...... +20oC
Typical Service Life 48 h (20oC)
Shelf Life 5 years
Jacket Transparent Shrink Sleeve
Jacket Color Olive Drab (green)
Applicable battery Spec. MIL - B - 49030
Alternative BA-42
Disposal Check with local regulations for
proper disposal.

BA-42 is a C-cell, methinks.....

Look at the Greek webpage:
http://www.sunlight.gr/industrial/pdf/BA-3042U.pdf
and read all about it....

US Army Ft Gordon training manual for the:
1. TA-341()/TT. The TA 341/TT is a tactical analog telephone.

a. Technical characteristics.

(1) Voltage requirements.

(a) Four BA-42s or BA-3042/Us.

http://www.gordon.army.mil/sigbde15/31L/c01lp5.html

Yep, he
http://fedcoelectronics.com/detail.tpl?SKU=AM2
Alkaline C cell...7800 maH....1.5V

Sorry.....

--
Larry