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Publication Title | UCB Battery State of Charge Capstone 60 Micro Turbone

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Capstone Turbine Corporation • 21211 Nordhoff Street • Chatsworth • CA 91311 • USA Telephone: (818) 734-5300 • Facsimile: (818) 734-5320 • Website:

Service Bulletin

Date: From: Subject:


All Capstone 60 Stand Alone MicroTurbines that are not operated for a period of approximately 30 days or longer. This includes MicroTurbines that are kept in storage, installed but not operated, or used purely as standby power.


When a Stand Alone C60 MicroTurbine is not operated for a period of approximately 30 days or longer, it is possible that the UCB battery will lose power or fully discharge. This problem may occur when the MicroTurbine is kept in storage, or it is installed but not operated. Another condition where the problem may occur is if the MicroTurbine is used purely as a standby system not connected to grid power.

To prevent the UCB battery from losing power or discharging fully, Capstone requires that the battery be disconnected from connector J13 on the UCB circuit board (see the following figure). The battery should be re-connected to J13 when the MicroTurbine is commissioned and ready for operation. For standby applications, the grid power may be supplied to allow internal charging algorithms to maintain UCB battery life while the Stand Alone battery is asleep.

A new feature is being added to software version 3.8X to correct this problem. NOTE This version will be available in approximately three weeks. Please contact your

authorized service provider (ASP) for the new software release.

513547-001 Rev A (Feb 2002)

J13 Connector

UCB Battery

Page 1 of 1


February 2002

Capstone Technical Support

UCB Battery State of Charge - Capstone 60 MicroTurbine

UCB If you have additional questions, please contact:

Capstone Technical Support

Phone: (818) 407-3600 • Fax: (818) 734-1080 Toll Free Phone: (877) 282-8966


This information is proprietary to Capstone Turbine Corporation. Neither this document nor the information contained herein shall be copied, disclosed to others, or used for any purposes other than the specific purpose for which this document was delivered. Capstone reserves the right to change or modify without notice, the design, the equipment specifications, and/or the contents of this document without incurring any obligation either with respect to equipment previously sold or in the process of construction.

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