Both graphene and lead-acid batteries have their advantages and disadvantages, and which battery to choose depends on your specific needs and budget. Here's how the two batteries compare:

Range and life: Graphene batteries generally have a longer range and service life, and more charges and discharges, which means they can maintain high performance after multiple charges and discharges.

Price: Graphene batteries usually cost more than lead-acid batteries, which may affect your final decision.

Safety: Lead-acid batteries have no combustible components inside and are therefore considered a safer option, while lithium batteries, especially graphene batteries, despite their high energy density, may present some risks in terms of safety.

Charging speed: Graphene batteries typically charge faster than lead-acid batteries, which means you can charge your electric vehicle in less time.

Weight and volume: Graphene batteries are generally lighter than lead-acid batteries, which can reduce the weight of electric vehicles and improve driving efficiency.

Overall, if you're after higher range, efficiency, and long service life, and your budget allows it, graphene batteries may be a better choice. However, if you are on a limited budget or don't have particularly high range requirements, lead-acid batteries are also a reliable option.