Tesla’s recently introduced battery packs, for both home and utility use, are already proving to be tremendous successes. If you recall, Tesla last week introduced a Powerwall battery pack (available in 7kWh and 10kWh configurations) for home owners alongside a Powerpack battery designed for corporate use and utility companies.

During Tesla’s earnings conference call this week, CEO Elon Musk said that the response to Tesla’s new batteries has been overwhelming and “crazy off the hook.” Impressively, the Powerwall has already yielded 38,000 reservations while the industrial-oriented Powerpack has netted 2,500 reservations.

RELATED: Tesla is finally making a car you can afford – here’s when it will be released

But because each reservation typically involves multiple battery packs, the actual number of batteries ordered is actually much, much higher.

Musk explained:

The Powerpack, it should be noted, typically this is bought by utilities or large industrial companies for heavy industrial work. So, typically it’s like at least 10 Powerpacks per installation. So if there’s 2,500 reservations, it’s actually 25,000 Powerpacks.

Powerwall [reservations]… it’s probably 1.5 to 2 per installation. So, 38,000 reservations is more, like 50,000 or 60,000 actual Powerwalls.

Not surprisingly, the Tesla Powerwall is already sold out through mid-2016. And with Musk stating that margins on Tesla’s new battery packs are likely to fall in the 20% range, Tesla’s newest endeavor may very well prove to be a cash cow.

A life long Mac user and Apple enthusiast, Yoni Heisler has been writing about Apple and the tech industry at large for over 6 years. His writing has appeared in Edible Apple, Network World, MacLife, Macworld UK, and most recently, TUAW. When not writing about and analyzing the latest happenings with Apple, Yoni enjoys catching Improv shows in Chicago, playing soccer, and cultivating new TV show addictions, the most recent examples being The Walking Dead and Broad City.