Price Match Guarantee JBL Battery 400 Spare Battery – Compatible with The JBL PartyBox Stage 320 and Xtreme 4 Portable Speaker (Speaker Sold Separately) The JBL Battery 400 is an external battery designed to extend the playtime of compatible JBL speakers. Here’s a breakdown of its key features: Double the Playtime: Each battery provides up to 18 hours of additional playtime for your speaker, effectively doubling the total playtime on a single charge. This is perfect for extended outdoor parties, camping trips, or any situation where you don’t want the music to stop. Fast Charging: In just 10 minutes of charging, the JBL Battery 400 can provide your JBL PartyBox Stage 320 or Xtreme 4 with an extra 2 hours of playtime. This is a lifesaver if you find your battery running low and need a quick boost to keep the party going. Guaranteed JBL Quality: As an official JBL product, the Battery 400 is designed to perfectly match the power requirements of your JBL speaker. You can be confident that it will deliver safe and reliable performance. Monitor Battery Health (PartyBox Stage 320 only): With the JBL PartyBox app, you can easily check the health of your PartyBox Stage 320’s internal battery. This helps you decide when it’s time to swap in a fresh JBL Battery 400. Eco-Friendly Design: JBL cares about the environment. The Battery 400 comes in FSC-certified packaging, which means the cardboard comes from responsibly managed forests. Additionally, the packaging is printed with soy ink, a more sustainable alternative to traditional inks. Compatibility: It’s important to note that the JBL Battery 400 is only compatible with two JBL speaker models: JBL PartyBox Stage 320 JBL Xtreme 4 Overall, the JBL Battery 400 is a great option for JBL PartyBox Stage 320 and Xtreme 4 owners who want to extend their speaker’s playtime and keep the party going all night long.

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