AAA Varta Longlife LR3 Alkaline 8-pack

VARTA LONGLIFE is the first choice that lasts a long time, especially in devices with constant and low energy consumption, such as remote controls, wall clocks or radios.
LONGLIFE batteries are distinguished by their long service life and reliable power supply.

Other names for this battery:

824(Wart)
7526(Wart)
24A (Wart)
24AU(Wart)
4003(Wart)
6135-99-117-3143(Wart)
824(Wart)
AAA(Wart)
AM4(Wart)
E92(Wart)
HP16(Wart)
K3A(Wart)
LR03(Wart)
LR03N(Wart)
LR3(Wart)
MN2400(Wart)
MV2400(Wart)
MX2400(Wart)
R03 (Wart)
R03P(Wart)
SUM4(Wart)
Type 286(Wart)
U16(Warta)
UM 4(Wart)

Some toy manufacturers have their own battery designations which they sometimes write in their user manuals.
These are as follows:
A = D (R20, LR20)
B = C (R14, LR14)
C = AA (R6, LR6)
D = 9V (6F22, 6LR61)
E = AAA (R03, LR03)