3.6V Bosch AGS 50 Cordless Grass Shear Replacement Battery 3000mAh

My AGS 50 starts cutting then slows down and almost stops before I've finished the lawn — is the battery dying or is something else wrong?

On low-draw garden tools like this shear, that symptom usually points to a Ni-MH battery deep into capacity fade — individual cells inside the pack have dropped below the threshold needed to sustain load, even if the battery appeared charged. Ni-MH packs in this voltage class are particularly vulnerable to shallow cycling: if the shear was regularly topped up before fully discharging, voltage depression builds up over time and cuts usable capacity significantly. Fully discharging the old pack completely before charging the replacement will help avoid the same pattern developing. After first charge on the new battery, check that the shear blade spins freely with no drag — a stiff pivot or debris under the blade guard forces the motor to draw harder and accelerates pack wear.

Charged the new Bosch grass shear battery overnight and the shear still feels weak straight out of charge — did I get a bad battery?

Ni-MH cells ship in a partially discharged state and often need two or three full charge-discharge cycles before they reach rated capacity — a shear that feels underpowered on the first use is behaving normally. We see this consistently on the bench with fresh Ni-MH packs at this voltage: cycle one delivers noticeably less than cycle three. Run the shear until it stops completely, charge it fully, and repeat that cycle twice more before drawing any conclusions about the pack. If weakness persists after three full cycles, press the blade guard firmly in at the locking point — a partially seated blade assembly adds mechanical resistance that mimics a weak battery.

Bosch AGS 50 battery won't hold charge anymore after sitting in the shed all winter — can it be recovered?

Ni-MH cells left in deep self-discharge for several months can develop a high internal resistance that prevents a standard charger from detecting or accepting the pack — the charger may show no response or an immediate fault. Some chargers can recover a deeply discharged Ni-MH pack using a conditioning or trickle mode; check whether your charger has that setting and run it before assuming the pack is dead. If the shear's original charger gives no response at all to the new replacement battery after winter storage, the charger itself may have a charge-detect fault triggered by extended disuse. Test the replacement pack in a known-working charger first to separate a charger problem from a battery problem.