This battery (for the price and size) is very powerful, efficient, long lasting, and performs better than I expected, I recommend this to anyone who wants to add on some punch on your existing battery or who is into installing a car radio on a power wheels vehicle. This battery is powering my son's vehicle's sound system (300-watt amp, also hooked up with a capacitor) on 2 (6x9 speakers) for about 5-6 hrs straight with no problems, trust me, if you're still in doubt.