Need 12V 2A Battery and connector

[treezleef]

Hi,
I sometimes wish to use my mobile router off battery.
Its one of these

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It needs 12V, 2A. I can get a battery for this.

But what is the name of the connector used on the router?

 

[Lucien Nunes]

Just because it uses 12V doesn't guarantee it will work reliably off a 12V battery, of which the voltage can vary between 10-14V. Some electronic devices rely on the voltage regulation built into the external power supply unit and need a precise 12V for correct performance. Other units have internal regulation but might still malfunction in strange ways if the battery is allowed to run low.

Connector looks like a 2.1mm coaxial DC plug but could be 2.5mm (pin diameter, the outside is the same for both). Check polarity, usually + centre but not always.