Like other cylindrical cells, the number describes the physical dimensions:
-
14 = 14 mm diameter
-
43 = 43 mm length
-
0 = Cylindrical shape
So a 14430 battery is 14 mm wide and 43 mm long.
14430
FR14430 Lithium Iron Phosphate 3.2V 400mAh Rechargeable Battery Cardboard Box of 8
$18.90 $2.36 / item
IFR14430 4 Pack Rechargeable Battery
$9.95 $2.49 / item
Certified Hohm Tech 18650 Batteries
Hohm Tech Life V4 18650 Battery 3.6v 3015mAh 22.1A
$9.95 $7.89 $7.89 / item
Pre-Order Available 
Hohm 18650 Work V2 2547mAh 25.3A Battery
$9.95 $6.95 $6.95 /
Hohm Alone 18650 Battery 3.7v 3309mAh 15.3A ICR
$12.49 $8.99 $8.99 / item
Hohm Tech Mega 3.6v 18650 Rechargeable Battery – 2505mAh, 22A High Drain Li-ion Flat Top
$12.99 $7.79 $7.79 / item
Hohm Depot 18650 Battery 3.7v 16.8a 3005mAh (Flat Top)
$11.49 $7.99 $7.99 / item
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