Earlier Medical LT batteries
Probably some for "carbon" based hearing aids in 1900s to 1920s. Some for gadgets like electrified hair brush.
|
Type
|
Voltage
|
Cells
|
mAH
|
W mm
|
H mm
|
D mm
|
Weight
|
Conn.
|
|
|
D1
|
3
|
2x –
|
–
|
57
|
89
|
70
|
227
|
2 x pin
|
–
|
|
D2
|
3
|
2x –
|
–
|
57
|
64
|
22
|
170
|
2 x flat
|
–
|
|
D3
|
3
|
2x –
|
–
|
44
|
57
|
24
|
106
|
2 x flat
|
–
|
|
D4
|
3
|
2x –
|
–
|
51
|
95
|
25
|
199
|
2 sockets
|
–
|
|
D5
|
3
|
2x –
|
–
|
57
|
83
|
22
|
199
|
2 sockets
|
–
|
|
D6
|
3
|
2x –
|
–
|
95
|
89
|
73
|
199
|
2 x pin
|
–
|
|
M2
|
4.5
|
3x –
|
–
|
78
|
83
|
25
|
199
|
–
|
–
|
|
R0?
|
4.5
|
3x –
|
–
|
78
|
79
|
25
|
199
|
2 sockets
|
–
|
-
M2 for Throat lamp
-
R0 ? nearly unreadable
-
Dimensions almost unreadable fractions
-
Weight in grams
Hearing Aid LT batteries (from 1938 or 1939)
For 1.4V valve (tube) filaments. Also used for other applications.
|
Type
|
Voltage
|
Cells
|
mAH
|
W mm
|
H mm
|
D mm
|
Weight
|
Conn.
|
|
|
D9
|
1.5
|
F
|
–
|
–
|
–
|
–
|
–
|
A
|
–
|
|
D10
|
1.5
|
B (U10)
|
–
|
–
|
–
|
–
|
–
|
Rc
|
–
|
|
D12
|
1.5
|
2 x U12
|
–
|
–
|
–
|
–
|
–
|
–
|
–
|
|
D14
|
1.5
|
U12
|
–
|
–
|
–
|
–
|
–
|
Rc
|
–
|
|
D18
|
1.5
|
AC2
|
–
|
–
|
–
|
–
|
–
|
A
|
–
|
|
D19
|
1.5
|
D19
|
–
|
–
|
–
|
–
|
–
|
A
|
–
|
|
D20
|
1.5
|
AC2
|
–
|
–
|
–
|
–
|
–
|
Rc
|
–
|
|
D22
|
3
|
2 x NS?
|
–
|
–
|
–
|
44.5
|
11.1
|
Rc
|
–
|
|
D23
|
1.5
|
N?
|
|
|
–
|
30.1
|
12.0
|
Rc
|
|
|
D29
|
1.5
|
AC2
|
–
|
–
|
–
|
–
|
–
|
–
|
–
|
-
D19 = Zenith Transoceanic Z1 Scale lamp battery
-
No listings found D7, D8, D11, D13, D15, D16, D17, D21 & D24 … D28
|
