If its a 12V type SLA (black box) with flat terminals like this one https://my.rs-online.com/web/p/lead-acid-ba...wE&gclsrc=aw.ds can just plug into UPS using similar 12V
If 6V SLA x2 plug 1 by 1 into motorbike using 6V
If car size 12V remove and charge with car

Depending on what type of battery is used.

This post has been edited by ceo684: Apr 6 2021, 12:15 PM

Ahh that should work but confirm whether it output is 230VAC or 12VDC for the one you linked, vs what is the expected voltage the autogate expects.

https://www.lazada.com.my/products/prolink-...-s13349814.html

A computer UPS should also work for 230VAC output (and as a charger) if you have one at home already.
UPS charger for those black 12V SLA can be used if you want to charge the existing.

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Back to topic
If your autogate has been around for many years, chances are the charging circuit for the backup battery may not be working. See what's the voltage on the wires leading to the battery (disconnect battery first).

This post has been edited by ceo684: Apr 6 2021, 12:45 PM

Can be used, start by setting the range to largest (enough to support 230V), don't start small otherwise you can blow the fuse (or meter).