Bosch AGS 7.2 Li Replacement Battery 7.4V 2200mAh BST200
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Bosch AGS 7.2 Li Replacement Battery 7.4V 2200mAh BST200 - 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.
Disclaimer
Disclaimer
⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.
🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.
Bosch AGS 7.2 Li Replacement Battery 7.4V 2200mAh BST200 - is backordered and will ship as soon as it is back in stock.
Voltage
7.4V
Amp
2200mAh
Bosch AGS 7.2 Li / Prio Series — 7.4V Li-ion Replacement Battery (BST200)
This is a 7.4V, 2200mAh Li-ion replacement battery for the Bosch AGS 7.2 Li cordless grass shear and the Prio / Prio 7.2 Li multi-tool platform. It replaces OEM part number BST200. The pack slots into the tool's battery bay and connects to the same BMS handshake circuit as the original.
- AGS 7.2 Li and PKP 7.2 Li compatibility: Both tools share the same 7.4V cell configuration, connector pinout, and BMS communication protocol. A single BST200-format pack works across the full Prio series because Bosch standardised the voltage rail and latch geometry across these compact garden tools.
- Bench tested on actual hardware: We ran this pack through charge and discharge cycles on the AGS 7.2 Li platform. The BMS accepted charge without fault codes, held the 7.4V rail steady under blade load, and tripped overcurrent protection correctly on a simulated stall test.
- Blade load cycling on first use: On the first two uses, run the grass shear on light trimming passes rather than dense or wet grass. This lets the BMS log the motor's normal inrush signature before it locks in overcurrent thresholds — prevents nuisance cutoffs when you push into thicker growth later.
BMS cutoff on AGS 7.2 Li motor-start inrush surge
The AGS 7.2 Li blade motor draws a short current spike every time it starts. On a new or recently stored pack, the BMS defaults to conservative overcurrent thresholds because it has no inrush history to reference. If that spike exceeds the threshold, the BMS trips and the tool stops instantly at trigger pull. Running two or three light-load cycles lets the BMS record the normal inrush envelope and raise the cutoff window accordingly. After that profiling, motor-start cutoffs on normal growth should stop.
Charger not recognising the BST200 pack after storage
Li-ion cells that sit unused for several months can drop below the charger's acceptance threshold — typically around 2.5V per cell. The Bosch charger reads this as a fault and refuses to begin the charge cycle. To recover the pack, place it in the charger and leave it connected for 10–15 minutes without removing it — some chargers apply a low-current trickle to bring cells back above the 2.5V floor before switching to normal charge mode. If the charger still shows a fault after 20 minutes, check cell voltage directly; anything below 2.0V per cell indicates the pack will not recover safely.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Bosch
- Manufacturer: CS
- Series: Standard
- Color: Black
- Product Type: Li-ion
- Battery Type: Li-ion
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
My AGS 7.2 Li cuts out the instant I squeeze the trigger on thick grass — why does it stop immediately?
This is a BMS overcurrent trip caused by the motor-start inrush spike exceeding the pack's protection threshold. It happens most often on a new or freshly charged pack that hasn't profiled the motor's inrush draw yet. Run two light trimming passes on thin, dry grass first — that gives the BMS enough current history to widen its cutoff window for normal trigger pulls. If cutouts continue after those break-in passes, check that the battery contacts in the tool bay are clean and seated flat.
The tool finishes a patch of grass but feels sluggish and bogs down halfway through the next section — what's causing the weak performance?
That behaviour is voltage sag — the cell voltage droops under sustained blade load, and the motor loses torque as a result. The most common cause on the BST200 platform is oxidised or dirty contact points between the pack and the tool's battery bay, which adds resistance to the voltage rail. Clean both sets of contacts with a dry cloth or light contact cleaner and check for any bent spring pins in the bay. If sag continues on clean contacts, the cells are likely degraded from repeated shallow cycling and the pack needs replacement.
The BST200 pack loses charge noticeably faster in cold weather — is the battery faulty?
It's not a fault — Li-ion internal resistance rises sharply below 5°C, which reduces the usable capacity the cells can deliver at load. The AGS 7.2 Li's small cell format makes it more sensitive to this than larger packs because there's less thermal mass to buffer the temperature drop. Warm the battery to room temperature before use — even 15 minutes indoors makes a measurable difference. Avoid leaving the pack in the tool in an unheated shed overnight before a cold-morning session.
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