I don't know what you mean by "name"
If you wish to find a suitable battery for the igniter, first identify the size
You could refer the chart for cylindrical batteries below. Probably a C or D
https://en.m.wikipedia.org/wiki/List_of_battery_sizesAfter that, select the type of battery depending on the usage. If it's only occasional, go for a dry cell like Duracell. If it is frequent, go for a NiMH rechargeable - you will need a charger too
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