Bosch GDS 18V 1600A016GB Replacement Battery 18V 8Ah

Bosch GDS 18V / GCM 18V-216 / GTS 18V-216 18V Li-ion Replacement Battery (1600A016GB)

This 18V Li-ion battery replaces the Bosch 1600A016GB / ProCORE18V pack across the GDS 18V impact driver, GCM 18V-216 mitre saw, GTS 18V-216 table saw, and 18 additional Bosch 18V platform tools. Capacity is 8000mAh (144Wh). It uses the same 10-cell configuration as the original ProCORE pack and communicates with the Bosch Electronic Cell Protection (ECP) system directly.

• Bosch 18V platform fit: Every tool in this list runs the same 18V slide-rail connector with a three-pin BMS data line. The pack negotiates with the tool’s ECP circuit on connection, so the battery must match the handshake protocol this one does, across all listed GDS, GCM, GCO, and GTS variants.
• Bench tested on actual hardware: We ran this pack on a GDS 18V and a GTS 18V-216. The BMS held through repeated motor-start inrush spikes without tripping, cell voltage balanced correctly under sustained load, and the pack accepted a full charge cycle on a Bosch GAL 1880 CV charger without fault codes.
• First-use break-in on high-torque tools: On first use, run the GDS 18V or any saw in this family at half load for two full discharge cycles before applying maximum torque or rip-cut loads. This lets the BMS record motor inrush current draw and set accurate overcurrent thresholds skipping this step can cause nuisance cutoffs during heavy fastening.

BMS cutoff on motor-start inrush in the GDS 18V and GTS 18V-216

Both the GDS 18V impact driver and the GTS 18V-216 table saw draw a sharp current spike the moment the trigger closes often 35 the running current. A new pack with default BMS protection thresholds can read that spike as a fault and cut power before the motor reaches speed. This is not a defective battery; it is the BMS acting on uncalibrated limits. Two break-in cycles at partial load teach the BMS the tool’s actual inrush signature, and the cutoffs stop. If cutoffs persist after break-in, check rail contact resistance oxidised contacts increase apparent inrush voltage drop and can re-trigger the BMS.

Charger shows blinking red on a new 8Ah pack after storage

Bosch GAL-series chargers reject packs where any cell drops below approximately 2.5V a threshold the charger monitors before starting a charge cycle. An 8Ah pack stored for several months can self-discharge to that point, and the charger blinks red rather than beginning charge. Tap the pack contacts briefly against a second Bosch charger or use a GAL 1880 CV in recovery mode if available. Alternatively, leave the pack seated in a cool charger for 1015 minutes some GAL units will attempt a trickle pre-charge at low voltage before escalating to full current once cells read above 2.8V per cell.