Np! Also, forgot to mention two other simple ways to test if your car battery is weak. Keep in mind you don't need to turn the car on, just have the car switched to accessory mode.
- Try your wipers, if they're extremely slow or much slower than usual then it should be very obvious the battery is low on juice.
- Turn on your headlights or the interior lights and see if they're much dimmer than normal.
In addition, I would recommend investing in a battery charger/conditioner or portable car jumper. I've had a NOCO jumper and charger for the past year now and it's saved my @$$ plenty of times due to buying a crappy AGM battery from Advanced Auto Parts.