Quote:
Originally Posted by Stubby79
I've taken apart a number of Ego batteries. The early ones had the extra material around the cells, but later ones did not...neither had a fan inside them. They did have quite a lot more (passive) vent holes than most batteries.
Have they changed again in the past couple of years?
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That was just what someone told me. I must have misunderstood, and the fans are only on the chargers. The Ego document says they are still using phase change material around the cells. They also design the pack with more surface area rather than packing the cells into the tightest block they can.
Don't really know how that plays out in longevity. I've got a Craftsman cordless drill about 10 years old now and the original small lithium ion battery is still going.