To properly charge your 12v 10ah Dakota Lithium battery you need the right charger and Dakota Lithium Battery has the one you need. I have tried charging the battery with my Nocco Genius Smart Charger set to Lithium Battery and it won't fully charge the battery like this one does.
Charger rating: INPUT 100-240 volts, 50/60HZ. OUTPUT: 14.8 volts, 3.0 amps
While you can use your existing 12 V charger, we highly recommend using our charger, which is designed to give you the best and fastest charging experience.