No. Group size narrows the physical fit, but you must also confirm terminal orientation, battery technology, minimum CCA, hold-down style and any vehicle-specific replacement procedure.

Not by itself. Meet or exceed the manufacturer’s minimum, but do not trade away correct size, terminals or chemistry just to chase a larger CCA number.

Do not downgrade an AGM-equipped vehicle unless the vehicle manufacturer explicitly approves it. Charging strategy and start-stop duty may require AGM.

More watt-hours generally means more stored energy, but real range depends on terrain, speed, assist level, rider load, temperature and battery condition. Compatibility must come first.

Only if the battery or vehicle manufacturer confirms it is compatible. Connector fit alone does not prove the voltage, charge profile or safety controls match.

Stop using and charging it. Keep people away, avoid handling a smoking or actively overheating pack, and contact emergency services if there is smoke or fire. Ask the manufacturer or local hazardous-waste program about safe disposal.