MegaLife Battery<\/a>, a lithium-ion battery<\/strong>. This reduced the battery weight from about 21kg to roughly 7kg\u2014almost a third of the original weight\u2014and right after leaving the shop, they noticed the steering felt lighter and the car\u2019s response was completely different. <\/p>\n![\"Lithium-ion](\"https:\/\/www.panamera-life.com\/wp-content\/uploads\/2021\/04\/4813C812-8274-48AA-9674-246455B5AD68-1280x960.jpeg\")
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In recent Porsches, the battery is installed near the front windshield area, which is relatively high for a sports car but somewhat close to the car\u2019s center of gravity. <\/p>\n
Because of this, a battery weighing nearly 20kg has a significant impact on the car\u2019s center of gravity<\/strong>. In fact, the 997 and 987 generations even offered an ultra-expensive factory lithium-ion battery as an option. <\/p>\nIt\u2019s easy to imagine that reducing the weight of a battery in this position by about two-thirds would have a positive effect on handling. <\/p>\n
Additionally, this battery features an emergency start button that, in case of a dead battery, powers the engine from a built-in spare battery via a separate circuit<\/strong>. <\/p>\nMoreover, it supports charging and discharging speeds up to 10 times faster and has only about one-third the weight of conventional lead-acid batteries with a lifespan of 5 to 10 years<\/strong>. <\/p>\n![\"MegaLife](\"https:\/\/www.panamera-life.com\/wp-content\/uploads\/2021\/04\/5C004828-8AB5-4DE6-AA45-07248D690DAD-1280x960.jpeg\")
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On that day, I actually got to drive the GT3, and while the front-end response was excellent, the car felt very agile and comfortable overall<\/strong>, the suspension and wheels had also been upgraded, so I couldn\u2019t personally judge the battery\u2019s sole effect since I hadn\u2019t driven it before the swap. That was a bit disappointing. <\/p>\nStill, this battery seemed very appealing, so I immediately ordered one to install on my Porsche 911 (air-cooled 964). <\/p>\n
<\/span>Replacing the Porsche 911 Battery with a Lithium-Ion Battery<\/span><\/h3>\nAccording to the manufacturer\u2019s compatibility chart, the 964 Porsche 911 fits a battery with the part number MV-072. It weighs only 7.6kg, less than half the 18-20kg weight of a typical 964 battery. <\/p>\n
I found a local store that carries MegaLife Batteries\u2014Super Autobacs at Sunshine Wharf Kobe\u2014and placed an order right away. The price was 106,920 yen with a 2,200 yen installation fee.<\/strong> They contacted me a few days later to say it had arrived, so I went for the installation. <\/p>\n![\"\"](\"https:\/\/www.panamera-life.com\/wp-content\/uploads\/2021\/04\/35B826FA-1F87-4409-A59A-9CA6A25DC111-1280x960.jpeg\")
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The swap was completed in about 30 minutes. I immediately tested it on my usual route and would like to share my review. <\/p>\n
<\/span>Engine Starts Dramatically Faster<\/span><\/h4>\nAfter the swap, engine start-up became incredibly quick.<\/strong> The difference is dramatic. The starter motor spins with much more vigor and sounds completely different. The original battery was occasionally charged and showed no signs of deterioration, but the speed of starting is overwhelmingly better. <\/p>\nAlso, the idling fluctuations almost disappeared<\/strong>, which was surprising. Lithium-ion batteries maintain low resistance and high output consistently, delivering stable power regardless of remaining charge. <\/p>\nI recorded a video, so if you own a 964, please compare it with your own car. <\/p>\n