The Honda NB50 Aero Scooter (1985) is a Powersports system that requires a 12V 3Ah SLA replacement battery. The compatible Universal Power Group replacement is the Yuasa YTX4L-BS 12V 3.0Ah Powersports Battery (YTX4L-BS), a 12V 3Ah SLA sealed lead-acid battery. This battery delivers up to 70 watts of standby power. It uses Bolt terminals, and measures 113 L x 85 H mm. This is a direct drop-in replacement for the Honda NB50 Aero Scooter (1985) requiring no modification to the device.
