Can I charge ev warrior with standard battery charger?

These are GEL cel sealed Lead Acid Batteries used for LOW current deep drain applications.

Usual connection is to have 2 x 12v batteries in series.

IF you have a "standard" car battery charger , it can put too much current into the batterie(s) and potentially cause an over heat / over hydrogen production.

You need to get the right charger from the supplier to your local scooter shop. They have the right tools to fix the machine and to make sure it is safe . Yes it may cost some $$$, but they have liability insurance if anything goes wrong. This is not a DIY, as you don't want to have the thing go disabled as you are using it.

Yes, But. 2 pack so 6volt each, I will assume standard lead acid batteries as the is common, and that is what the pic shows. depends on what you call standard charger, I would not do it with my 40 year old standard charger, although at a push, it will still charge them, but need to keep a check on them, later chargers, monitor the battery voltage, and adjust output to suit. All chargers work the same way, so basically yes, but keep a check on them, not running to hot etc. check voltage if you can. But they all work the same way, just later cells are used to the controlled cct of later chargers. especially with them being so called sealed, they still let gas escape, via a pin hole, If they get hot, to much gas, going out, reduces the effiency of the electrolyte, so will reduce the life, BUT as long as you keep checking them and stop if they get hot no problem, they will get warm anyway.