u/Fit_View3100

I've had my truck for 2.5 years. I haven't had any real issues with the original 12V battery (yet...?) Or with the truck in general... love it! But I've had an update stuck for a month or so. I haven't been driving too much, just small short trips around town, so probably why the small battery is never topped up. So... How should I recharge it? Straight to the battery posts? Remove the plug/BMS leads from the truck first? Or can I recharge using the posts on the frunk for "jumping" the battery?

What do you guys recommend?

I have a 15A Schumacher handy, it has three battery type STD, AGM, and GEL. Which one would be appropriate?