Bosch GBM 7.2 Replacement Battery 7.2V 2100mAh Ni-MH
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Bosch GBM 7.2 Replacement Battery 7.2V 2100mAh Ni-MH - is backordered and will ship as soon as it is back in stock.
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Battery Care Tips
Battery Care Tips
🔹 Getting Started
Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.
🔹 Keep It Healthy
Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.
Delivery and Shipping
Delivery and Shipping
🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.
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Disclaimer
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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.
Bosch GBM 7.2 Replacement Battery 7.2V 2100mAh Ni-MH - is backordered and will ship as soon as it is back in stock.
Voltage
7.2V
Amp
2100mAh
Bosch GBM 7.2 Series — 7.2V Ni-MH Replacement Battery (2 607 335 031)
This is a 7.2V, 2100mAh Ni-MH replacement battery for the Bosch GBM 7.2 cordless drill/driver range. It fits the GBM 7.2, GBM 7.2 VE-1, GBM 7.2 VES-2, GDR50, and several additional models. The pack slots directly into the original battery bay and communicates with the tool's power circuit without modification.
- GBM 7.2 platform fit: The GBM 7.2 series shares a 7.2V rail and a common battery connector across its variants. All listed models pull from the same voltage and physical form factor, which is why one pack covers the full range including OEM part numbers 2 607 335 032, 033, 073, and 153.
- Bench tested on actual hardware: We cycled this pack through repeated trigger-pull loads on a GBM 7.2 VE-1. The cell block held voltage above the low-cell cutoff threshold through full discharge, and the charger accepted the pack without rejection flags on multiple cycles.
- Ni-MH break-in on motor start: On first use, run the drill at half load for two cycles before applying maximum torque. Ni-MH cells deliver current unevenly until the pack has been cycled — running full torque immediately can create cell imbalance that shortens overall capacity over time.
Voltage sag on the GBM 7.2 under sustained drilling load
The GBM 7.2 is a light-to-medium drill, but continuous use in dense material draws sustained current that Ni-MH cells handle differently than Li-ion. As cell temperature rises inside the compact housing, internal resistance increases and the terminal voltage sags. The tool may feel underpowered even with a charged pack. This is not a fault — it is a chemistry characteristic. Let the pack rest for 10 minutes between extended sessions to allow cell temperature to drop and internal resistance to recover.
Charger not recognising the pack after it has been sitting unused
Ni-MH packs self-discharge during storage — faster than Li-ion. If a pack has sat unused for several months, the resting voltage can fall below the threshold the charger uses to confirm a valid battery is present. The charger may show no response or flash an error. To recover it, briefly connect the pack to a known-good 7.2V Ni-MH charger in trickle mode for 15–20 minutes to bring the cell voltage up to approximately 6.5V, then allow the charger to resume its normal charge cycle.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Bosch
- Manufacturer: CS
- Series: Standard
- Color: Black
- Product Type: Ni-MH
- Battery Type: Ni-MH
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
My GBM 7.2 cuts out the moment I pull the trigger hard — is the battery dead or is something else going on?
This is a BMS overcurrent trip, not a dead pack. The inrush current spike at trigger pull — especially under load in dense material — can exceed the protection threshold on a cold or low-state-of-charge pack. Warm the battery to room temperature, charge it fully, then try again at half-speed first. If it still trips on hard pulls, check the battery contacts in the tool for oxidation — high contact resistance amplifies the voltage spike the BMS sees.
The drill runs fine for a minute then goes weak and bogs under load — charged pack, no cutout.
That is voltage sag from rising cell temperature, not a capacity problem. Ni-MH internal resistance climbs as the cells warm inside the GBM 7.2's enclosed housing, which drops the terminal voltage under load. The tool throttles back because the voltage rail falls below the motor's efficient operating range. Rest the pack for 10 minutes to let cell temperature drop, then resume — if performance returns, the cells are fine and the pack just needs a break between heavy sessions.
After sitting in a drawer all winter, my replacement pack won't charge — the charger just ignores it.
Ni-MH self-discharges at roughly 1–2% per day, so several months of storage can drop the pack well below the charger's minimum acceptance voltage. Most Bosch 7.2V chargers will not begin a charge cycle if the pack reads below approximately 5.5–6V. Connect the pack to a Ni-MH compatible charger that has a trickle or recovery mode, let it run for 15–20 minutes until cell voltage reaches 6.5V, then switch to the normal charge cycle. Do not attempt to force-charge with a higher-voltage source.
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