This article explains what it means when the FAIL indicator blinks during charging of the BTY‑NIMH/A battery unit, and how to respond.
Note: The behavior differs depending on whether your BTY‑NIMH/A supports recovery charging.
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For BTY-NIMH/A Units with Recovery Charging Feature (BTY-NIMH/A-2)
When the CHARGE indicator and FAIL indicator are blinking:
The battery is charging in recovery mode, as it has been excessively discharged. Once the voltage reaches a normal level where it can be charged, the FAIL indicator goes dark and the CHARGE indicator blinks, after which you can keep charging.
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For BTY-NIMH/A Units without Recovery Charging Feature (BTY-NIMH/A, BTY-NIMH/A-1)
When the CHARGE indicator is off and the FAIL indicator is blinking:
Battery voltage is excessively low.- The battery's voltage may decrease right after it is used.
Remove the BTY-NIMH/A from the amp, and try charging it again several hours later. - Try unplugging and plugging the adaptor into the DC IN jack several times. Once the voltage reaches a level where charging is possible, the FAIL indicator turns off, the CHARGE indicator blinks, and you can keep charging.
- The battery's voltage may decrease right after it is used.
Notes
- If an AC adaptor is plugged into the DC IN jack but the CHARGE and FAIL indicators remain unlit regardless of the above, either the battery has over-discharged or else the battery is malfunctioning. Contact your dealer or a Roland customer service center.
- Please refer to the latest version of the user manual for additional information. https://www.roland.com/global/products/rechargeable_amp_power_pack/support/