70% The 10-year coverage is nothing to get excited about. That's the industry standard. The capacity guarantee here is standard as well. Because your battery's overall capacity deteriorates over time, manufacturers will guarantee that your battery will still retain up to a certain amount of its original capacity by the time your warranty expires. In this case, Tesla guarantees that your Powerwall will retain up to 70% of its original capacity after 10 years. But again, this is very standard. What you should be excited about is the unlimited cycle coverage. Battery cycles are one of the ways manufacturers measure the lifespan of the battery. Every time your battery charges and discharges, it completes a cycle. The amount of cycles the manufacturer guarantees it will complete is its cycle life. In most cases, once you've cycled your battery beyond its designated cycle life, your warranty will end, even if you still have a few years of coverage left. Unlimited cycles means there's no limit on how much or how often you use your battery. Price Both Powerwall models are actually on the cheaper side for what you're getting. The Powerwall 3 currently costs around $13,500. This includes the gateway and other accessories but does not include the cost of installation. The Powerwall 2 goes for a bit cheaper, at around $8,100 to $8,400. Expect to pay between $2,000 and $3,000 for the installation. Powerwall 2 is the budget pick here, but it's still not a bad battery. And even though the Powerwall 2 wins this category for its cheaper price, the Powerwall 3 is a pretty good deal too. You're getting the same 13.5 kWh capacity with both batteries, and Powerwall 3 has double the power output and a fully integrated solar inverter. You should also consider the fact that we don't know if or when Tesla will phase out the Powerwall 2. Keep in mind that these systems aren't compatible with one another. You can't mix and match. The Tesla Powerwall 2 is a bit cheaper than Powerwall 3. Tesla