Gruber
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Gruber
HobbyMasters
M.L. Toys
KidsWheels
HobbyMasters M.L. Toys
Gruber
KidsWheels
for 12v vehicles that NEED to be upgraded to 18v
#127956
SO I found these batteries and wondered if there was any thoughts or info on them. Trying to get the most AH I can without cutting anything.

http://www.batterysharks.com/ProductDet ... 4&CartID=1

I am also installing a pair of HPI GT 550 motors but this is my first upgrade. I have done some reading. I am pretty handy in the wiring field. So I i think I have it covered but some pics of the fitment of 3 batts in a F150 monster trac/Raptor would be nice. Plus any info that is not talked about in here over and over again that I should look out for.

Thanks in advance!
Mike
#128031
Ok so for anyone that interested I went to a local battery shop and found something interesting. I found a 12 Volt 22 Ah jump box battery. It is 7"W x 3"D x 6.5T. It fits in the big F150 easily with room on the sides for two 6 volt 12 AH batteries. If I wire the 6V + to + and - to - I will have 24 Ah on the 6V. Then wire the 6V to the 12V + to - I will have 22 AH not 12 or 14. Also if I switch on set of connectors on the 6V and switch the connectors on the 12V I can charge all three Batteries at the same time as 12V. The cost of the three 6V 14 Ah Batteries was $62 shipped. The cost of the two 6V 12Ah and the 12V 22Ah batteries shipped was $75. Thats 8Ah more for $13. Here are the links.

12V 22AH
http://www.ebay.com/itm/221403386115?_t ... EBIDX%3AIT

6V 12Ah
http://www.batterysharks.com/6-Volt-12- ... ps6-12.htm
#128124
AutoX95 wrote:Ok so for anyone that interested I went to a local battery shop and found something interesting. I found a 12 Volt 22 Ah jump box battery. It is 7"W x 3"D x 6.5T. It fits in the big F150 easily with room on the sides for two 6 volt 12 AH batteries. If I wire the 6V + to + and - to - I will have 24 Ah on the 6V. Then wire the 6V to the 12V + to - I will have 22 AH not 12 or 14. Also if I switch on set of connectors on the 6V and switch the connectors on the 12V I can charge all three Batteries at the same time as 12V. The cost of the three 6V 14 Ah Batteries was $62 shipped. The cost of the two 6V 12Ah and the 12V 22Ah batteries shipped was $75. Thats 8Ah more for $13. Here are the links.

12V 22AH
http://www.ebay.com/itm/221403386115?_t ... EBIDX%3AIT

6V 12Ah
http://www.batterysharks.com/6-Volt-12- ... ps6-12.htm


You always want to keep the AH the same, I'm not 100% sure how you are wiring it, as it honestly doesn't make sense by just reading it for me, I don't know if the wiring will work.
#128139
AutoX95 wrote:Even with the 24AH being 2 batts connected by cables? I would think with the Resistance the AH would be pretty close. They are only 2AH difference. If not I can always order one of these. Is $17 more. I just need to make sure I can fit it without cutting anything.

http://www.chromebattery.com/12v-24ah-s ... ector.html


Yes, even a 2ah difference will ruin the batteries or worse.
#128145
I'm going to take a contrary stand and say the mismatched ah is probably not going to make a difference. What's going to be more important is the amp delivery capacity of the batteries. The 12v may be rated at 100ah for 10 seconds but if the 6v are only rated 30ah they are going to be a bottleneck in your circuit. It's only as good as the weakest link (which should always be your fuse or circuit breaker)
#128169
OK so I installed the batts. I let my little girl run it around the block with me. I was driving the golf cart with her. ( My whole reason for speeding up the F150 was so she could keep up with the golf cart at its slowest speed.)
We ran it for 12 to 15 min straight at full speed. There is no heat build up anywhere on the batts or wiring at all. I put the batts on the charger to see what charge % they were at. The 12V 22Ah was at 75% full and the two 6V 12AH (in parallel for 24Ah) were at 81% full. I'm not seeing any problems here. Now that said I don't think I'm going to let the batteries get below 30%. Just to make sure that one is not drawing on the other two much.
#128176
Keep us updated down the road as to how the batteries fair :)

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