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Battery Pack for Calisto 620 Bluetooth Conference Phone



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Replacement battery pack for the Calisto P620 and P620-M

  • Li-ion Polymer battery
  • To install remove battery door on bottom with tiny Phillips screwdriver
  • Charges with AC wall charger (1.5 hours) or USB cable (2.5 hours)
  • Provides up to 7 hours talk time
  • 3.7V, 930 mAh, 3.4Wh
  • Measures 2″ long, 3/8″ tall by approximately 1/2″ wide
  • Also has part number 85442-01 marked on this battery
  • Please recycle your old battery
BTP Model: PL-89305-01
MFR Part: 89305-01

Additional information

Weight 0.1875 lbs
Dimensions 5.25 × 4.00 × 2.00 in


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Call: 800-457-4287 or 425-649-9262

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Special order, 1-2 weeks.

Sometimes this item is not in stock, due to low demand. In this case, expect a phone call or email from BTP Customer Service letting you know the estimated ship date.

If your order includes other products that are in stock, we will give you the option of waiting until all items are in stock to receive your order, or you may request a partial shipment of in stock item(s) with the special order item(s) to follow when available.

BTP does everything possible to eliminate delays and unnecessary expense associated with returns. At least two members of the BTP team will review your order for accuracy. If we have any questions or concerns about your order, such as two incompatible products, we will contact you right away.


“The instructions you sent were flawless and easy to setup. Thank you, thank you for making my job so much easier. BTW, you have a great team including yourself.Read more

Miguel L., Tampa, FL