There are many options today for converting your cart over to lithium batteries, ranging from cheap, low quality Chinese batteries to expensive US built lithium replacement kits. The first consideration is can I do it myself? Yes, you can, BUT, you are going to need to know what you will need to complete the project. You can find Chinese batteries on the internet at prices equal to, or even below, lead acid. But, the battery is not all you will need and battery quality is very important. Lithium batteries require a different charger, as the voltage is slightly different from the voltage of the lead-acid batteries you now have. Also, the charging profile for lithium is quite different. You do need a different charger. In lead-acid applications, there is sometimes a way to utilize 2 of the 6 volt batteries to power 12 volt accessories. This is not possible with lithium as the battery is not made up of 6 volt components. You will need an electronic device for reducing the lithium voltage down to 12 volt to run the lights, horn, phone charger, etc. The best way to proceed is to buy a lithium battery replacement kit that is customized to your particular cart. We offer the ECO Battery lithium kits. They include US made, high quality lithium batteries with a replacement warranty, all provided by a reputable company that will be there, should you need warranty service. Our kits also include the on-board battery charger, and DC to DC converter needed for 12 volt accessories. All of the wiring and monitoring meters are also included in the kit. The kits are literally Plug and Play. The alternative to these kits, is to try to find all of the necessary parts online from suppliers overseas that will not be able to help you when things go wrong. By far the best and safest way to upgrade to lithium is with one of our ECO Battery kits, built specifically for your particular golf or utility cart. Click on this link for our current selection of lithium battery replacement kits. https://ezgolfcart.com/search.htmlq=eco+lithium+battery We have kits available for many other makes and models, just call us at 530 671-6905 Lithium battery technology is changing very fast. We will be watching and learning, and adding new products as we move forward. ↑