A few customers of BarrowPro conversion kits are not sure how to choose a cost-effective battery pack as our company do not provide batteries.
For 24V 350W power wheel kit, we suggest you buy 2x 12V LiFePO4 or 1x 24V Li-ion battery starts from 10Ah. If you require a much longer range over than 8-10km and use the barrow frequently, you may choose 12Ah, 15Ah or 20Ah ones. However typically 10-12Ah ones are enough for your daily fishing according to feedback from many customers. The ones selling at unusual cheap price are not recommended and please be aware of the fake specifications.
For 36V 350W tool battery version kit, please make sure you have any of 2x18V Makita, Dewalt, Milwaukee or Bosch start from at least 4-5Ah. 8-9Ah will be perfect if you require much longer range and frequent use. Our 36V 350W kit comes with tool battery connector bundle which is also under warranty of 2-year.

Here is the eBay link of conversion kit for JRC barrows in the picture LINKY POO™ https://www.ebay.co.uk/itm/377306464244
For 24V 350W power wheel kit, we suggest you buy 2x 12V LiFePO4 or 1x 24V Li-ion battery starts from 10Ah. If you require a much longer range over than 8-10km and use the barrow frequently, you may choose 12Ah, 15Ah or 20Ah ones. However typically 10-12Ah ones are enough for your daily fishing according to feedback from many customers. The ones selling at unusual cheap price are not recommended and please be aware of the fake specifications.
For 36V 350W tool battery version kit, please make sure you have any of 2x18V Makita, Dewalt, Milwaukee or Bosch start from at least 4-5Ah. 8-9Ah will be perfect if you require much longer range and frequent use. Our 36V 350W kit comes with tool battery connector bundle which is also under warranty of 2-year.

Here is the eBay link of conversion kit for JRC barrows in the picture LINKY POO™ https://www.ebay.co.uk/itm/377306464244