56V SABO Professional E-POWER Replacement Battery 6Ah Li-ion

My SABO hedge trimmer cuts out halfway through the hedge and won't restart for a few minutes — what's wrong?

This is thermal cutoff triggering on the 56V pack — the battery's protection circuit shuts down current when cell temperature hits the threshold, which happens faster when cutting dense or woody growth on a warm day. The arc-shaped housing helps dissipate heat, but continuous heavy load on a 6Ah pack will still trip the cutout if airflow around the battery is blocked by debris or a poorly seated latch. Let the pack rest in shade, not on hot concrete, then check whether the restart time shortens — if it does, heat is the cause. After it cools, press the battery firmly until it clicks; a partially seated connection raises internal resistance and generates extra heat before the cut even happens.

I swapped this battery between my SABO trimmer and blower and now the blower runs noticeably weaker than it used to — is the battery damaged?

Voltage sag under load is the likely cause, not permanent damage — a 56V lithium pack that's been repeatedly run down to near-empty will show a steeper sag curve, meaning the terminal voltage drops faster once the blower motor draws hard. This reads to the tool's electronics as a lower-charge state, so it throttles output before the pack is actually flat. Charge the battery fully, then check the indicator LEDs immediately before using the blower; if it shows full charge but still feels weak under load, the pack's internal resistance has risen from deep-discharge cycling. Run a full charge and discharge cycle once and retest before assuming the pack needs replacing.

The charger just keeps blinking and never finishes charging my SABO BA6720T — it's been on there for hours.

A persistent blink without reaching full charge usually means the charger detected a cell voltage that was either too low to begin a normal charge cycle or outside the acceptable temperature window when charging started. If the pack sat unused for weeks, one or more cells may have drifted below the recovery threshold — some chargers will attempt a slow recovery pulse, others will fault and stop. Remove the pack, leave it at room temperature for 30 minutes, then reinsert it and watch the first 60 seconds: if the blink pattern changes from the fault pattern to a steady or slower pulse, recovery charging has started and you should leave it alone. If the fault blink resumes immediately, check the contact pins on both the battery and charger for corrosion or debris before concluding the pack won't recover.