group 27 batteries help

**warbird** · 04-22-2012, 05:15 PM

i have group 27 batteries [interstate] for 24 volt trolling motor min kota fortrex 80lb in a z8 nitro. batteries was dead in apr 4 hours pulling cranks maybe less. how long would group 30 batteries last or what do you think the difference would be? what brand of battery? i read the stickys but couldnt find my answer. also have group 24 for a starting battery [250 pro] and if i run the recirc pumps very long ill be jump starting motor do you think starter battery needs to be group 30 also? thanks in advance. joe

**Rees Guide** · 04-22-2012, 05:56 PM

USBattery makes a dang good 31 series, they are pricey but they will last. A WalMart 29 series will do for a cranking batt and shouldnt need jumping off during the day of fishing.
Good luck.

**KDAVID1** · 04-22-2012, 06:19 PM

x2

**warbird** · 04-22-2012, 06:39 PM

thanks guys still looking for price. how much longer you think they will last compared to group 27?

**Cray** · 04-22-2012, 07:51 PM

If you goto the Group 31 interstate they will have the highest amp hr rating but expensive. From everything I have read you could expect to get 6 to 8 hrs of pulling cranks. I'm surprised you got 4 out of those 27's pulling a boat that big. Sounds like you need a 27 for cranking and minimum 29 or 31 for trolling motor. Walmart has best price/ warrant on 29's and they hold up pretty good. Like Rees said if you want really good those US Battery are tough to beat.

**warbird** · 04-22-2012, 08:04 PM

thanks cray think ill take one of my 27 and use it for starting and buy two 31 for trolling motor

**CatFan** · 04-22-2012, 08:14 PM

29 and 31 are the same size for all practical purposes. For maximum run time, go with the highest RC you can find. In 29/31 you should be able to get 205 to 210 minute RC easily. Best deal is the Everstart Maxx 29. Best battery is the Trojan SCS-225 at 225 minutes RC.

Depending on which 27 you have now, you have 160 to 180 minute RC now.