006-0007129 10/12/2018
Rev B
43 of 60
UPS-1500 3-Phase Guide
www.synqor.com
Section V
Battery Pack
Battery Technology
The battery packs for the UPS-1500 Series contain Lithium Polymer rechargeable batteries.
SynQor’s battery packs offer high energy storage in a small light weight package as opposed
to similar lead-acid solutions. The battery packs are capable of very high discharge rates and
quick recharging. The batteries have been design for many discharging/charging cycles over a
long life. The battery packs are well suited for a UPS applications. Lithium Polymer batteries are
commonly used in many military applications.
Electronic Circuitry within the Battery Pack
SynQor’s battery packs have internal electronic control circuitry that:
• Control battery charging (including charge equalization)
• Separates battery cells into segments
• Runs diagnostics on the battery pack
• Enforces a maximum current limit when the battery is being charged/discharged
• Enforces a charging/discharging voltage limit to avoid over-charging/discharging of
the battery
• Disables battery charging/discharging if the battery is outside the temperature range
• Disconnects or inhibits the internal battery pack’s terminals when the pack is not
inside the UPS
• Controls the battery pack’s front panel LED indicators
The purpose of separating the battery cells into multiple segments is to allow the battery pack
to remain useful even if one of the individual battery cells fail. In normal battery configuration,
the failure of a single cell can disable the entire battery. The SynQor battery packs are designed
with battery cells arranged in segments that can be disconnected from the whole by internal
electronic control circuitry in case of failure. The control circuitry will isolate a failed segment
and allow the remaining segments to continue to operate (at reduced battery run-time) until the
battery pack can be serviced.
The Standard Battery Pack (that fits in the UPS-1500-S units) is divided into 3 segments. Failure
of a battery cell will reduce the battery runtime at least 2/3
rds
of the battery pack’s full run-time.
The Extended Battery Pack (that fits in the UPS-1500-E units) is divided into 7 segments. Failure
of a battery cell will allow at least 6/7
ths
of the battery pack’s full run-time to continue to be
available to the UPS.
