Replacements batteries:

XENO Energy: XL-200F (16.5), XL-205F (19.0)
Tadiran: TL-2300 (16.5), TL-4930 (19), TL-5930 (19)
Sonnenschein: SL-780 (16.5)
Tekcell: SB-D01 (16.5), SB-D02 (19.0)
EEMB/GMB: ER34615 (16.5)

These are batteries with a very wide range of applications, including: 

Memory backup 
Industrial and office devices 
Medical devices 
Alarms and alarm systems 
Gas and water flow meters 
Professional electronics 
Location buoys 
Signalers 
Vehicle electronics

Product features lithium battery EVE ER34615 / LS33600 STD 3.6V LiSOCl2 size D
Model/Manufacturer Code
LS 33600
Battery Type Designation
Lithium battery(lithium thionyl chloride)
General range of special faucets
LS33600/D
Battery size marking
R20/D
Voltage [V]
3.6
Diameter [mm]
33.1
Height [mm]
61.5
Mass [g/pcs]
100.0
Battery capacity [mAh] 
19000
Maximum Discharge Current (Continuous) [A] 
0.23
Maximum discharge current (pulse) [A]
0.4(1 sec)