Truck batteries are in hot demand among Whangarei thieves with eight stolen in one raid over the weekend.
The batteries are likely being sold for scrap or their acid used to make methamphetamine.
Whangarei police Sergeant Paul Nicholas said truck batteries had been a target for thieves in recent months, and the situation came to a head on Saturday night between 10.30 and 11.30 when eight were stolen from trucks at a Port Rd business.
Given the size and weight of the batteries the thieves would have needed a vehicle to transport them away.
Mr Nicholas said truck batteries were relatively expensive and it was believed they were being sold for scrap due to the lead they contained.