# Diode on main contactor **URL:** \ **Category:** GEM Forum\ **Created:** [August 25, 2018, 1:48am UTC](https://community.electricforum.com/t/diode-on-main-contactor/14389 "2018-08-25T01:48:04Z")\ **Posts on this page:** 6\ **Page:** 2
**Author:** ![stretchkart](https://avatars.discourse-cdn.com/v4/letter/s/e95f7d/32.png) [@stretchkart](https://community.electricforum.com/u/stretchkart)\ **Post date:** [August 28, 2018, 4:21am UTC](https://community.electricforum.com/t/diode-on-main-contactor/14389/21 "2018-08-28T04:21:02Z")
Larry, The motor and controller I have is from Navitas ( TAC 1.0) I hope to have it in and working this week. Will have more info in a couple of Days. I picked the Navitas because I have seen them on some golf cart stretch conversions locally and test driving them they seemed to work pretty good. I’m on the fence with batteries. I like the idea of Lithium and what I have read about here on the Forum. However one of my neighbors put some Lithium batteries in one of his golf carts a couple of years ago and then got afraid of them and stopped using it and pulled the system out and went back to lead acid… He works for Porsche, drives a Nissan Leaf back and forth to work (because it is cheap and he can plug ii in at work). Occasionally he has a company Tesla sitting in his driveway and works on what Porsche has coming down the line with electrics. Also in the neighborhood a house went up in smoke from a golf cart charger fire… I do have a buddy who really likes his Chevy volt… ---
**Author:** ![stretchkart](https://avatars.discourse-cdn.com/v4/letter/s/e95f7d/32.png) [@stretchkart](https://community.electricforum.com/u/stretchkart)\ **Post date:** [August 28, 2018, 4:23am UTC](https://community.electricforum.com/t/diode-on-main-contactor/14389/22 "2018-08-28T04:23:33Z")
".99 for 10 ", beats Amazon at one for 8 bucks from a golf cart dealer… ---
**Author:** ![Inwo](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/inwo/32/1067_2.png) [@Inwo](https://community.electricforum.com/u/Inwo)\ **Post date:** [August 28, 2018, 8:15am UTC](https://community.electricforum.com/t/diode-on-main-contactor/14389/23 "2018-08-28T08:15:08Z")
Look into lifepo4 batteries for safety. I should have some for sale soon. Bench testing is done. Hope for a real world test in an ev soon. ![1](https://canada1.discourse-cdn.com/flex030/uploads/electricforum/original/2X/0/09859fb7f2b641b8b47310a586208d47fb7c6739.png) A 4s battery makes a perfect 12v drop-in replacement. My test will use bottom balance and no bms. Each 70ah 12v battery will be about $200. Pictures is similar from my last shipment. ---
**Author:** ![stretchkart](https://avatars.discourse-cdn.com/v4/letter/s/e95f7d/32.png) [@stretchkart](https://community.electricforum.com/u/stretchkart)\ **Post date:** [August 29, 2018, 1:33am UTC](https://community.electricforum.com/t/diode-on-main-contactor/14389/24 "2018-08-29T01:33:06Z")
Your 4s battery looks interesting. What are the dimensions and weight? Lifepo4 is what my neighbor had. Found out the real issue was not the batteries per se but a DC to DC converter that got left on and drained them down too much. ---
**Author:** ![stretchkart](https://avatars.discourse-cdn.com/v4/letter/s/e95f7d/32.png) [@stretchkart](https://community.electricforum.com/u/stretchkart)\ **Post date:** [August 29, 2018, 1:37am UTC](https://community.electricforum.com/t/diode-on-main-contactor/14389/25 "2018-08-29T01:37:48Z")
Got my motor in. It doesn’t fit with out a bit of interference on the frame… Might have to do a little modifying . Need to work on the inputs next. ![IMG_8454](https://canada1.discourse-cdn.com/flex030/uploads/electricforum/original/2X/7/77669ffb10da93ea477eed002b63662a7cb311cc.jpeg) ![IMG_8455](https://canada1.discourse-cdn.com/flex030/uploads/electricforum/original/2X/1/16d5589373abf7986a0c864c07264780e97add88.jpeg) ---
**Author:** ![dlwford](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/dlwford/32/2713_2.png) [@dlwford](https://community.electricforum.com/u/dlwford)\ **Post date:** [August 29, 2018, 2:42am UTC](https://community.electricforum.com/t/diode-on-main-contactor/14389/26 "2018-08-29T02:42:06Z")
Thanks for pix, Hope it works as good as it looks. AC is the way to go given the present controller technology. ( Brushes are for shoe polish!!) You can fix the fit-up problem with a “fire wrench”!! Brush guards go on the outside !! 👨‍🌾 That’s the package I am looking at should I need a motor transplant. Been looking at Lithium options - pretty sure I’m gonna need batteries. Looks to me like the Nissan Leaf battery pack is pretty easy to work with - just wonder what the collective opinion is on this site. Any idea where to buy a complete pack out of wreck? Not real popular around here! Good progress - Zoom Zoom [Previous page](https://community.electricforum.com/t/diode-on-main-contactor/14389.md?page=1)