Summonoid recharger

Summonoid rechargers are rechargers that work the same way as beds, except they don't replenish the essence of summon. Summonoids and summonoidized Villagerians often use summonoid rechargers instead of beds, as most summonoids don't have the essence of summon, while most summonoidized Villagerians don't use their essence of summon.

Appearances
In the Summonoid lab, many summonoid rechargers are seen. Serendipity and Yumiko's summonoid rechargers are seen as well, but Bubbles and Libra's are only shown in a flashback.

Epopt St. has a few summonoid rechargers. Serendipity also has another summonoid recharger here.

The summonoid hideout near the Summotel also has many summonoid rechargers, used by the summonoids there.

Trivia
Linette and the Number Summonoids use beds instead of summonoid rechargers. This is because they have the essence of summon, but likely also because they want to be as natural as they can be. Yumiko, however, uses a summonoid recharger instead of a bed, even though she also wants to be as natural as she can be.

Pania also used her bed instead of a summonoid recharger when she was transformed into a summonoid.