Bosch 18V Cordless Air Pump Replacement Battery 2000mAh
⚠️ This item is available by SPECIAL ORDER. Delivery for this product typically takes 2–3 weeks.
EXTRAOFF
Check that your old battery model number and device model to match our description. This makes sure they work together.
We ship your order same day if you buy it before 4 PM EST.
Bosch 18V Cordless Air Pump Replacement Battery 2000mAh - is backordered and will ship as soon as it is back in stock.
Let customers speak for us
Send Your Battery Photo
Expert Technician Help
Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.
POST YOUR BATTERY IMAGE
Product & Solutions Expert
✉ sales@batteryweb.com
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 18V Cordless Air Pump Replacement Battery 2000mAh - is backordered and will ship as soon as it is back in stock.
Voltage
18V
Amp
2000mAh
Bosch UniversalPump 18V — 18V Li-ion Replacement Battery
An 18V 2000mAh lithium-ion replacement battery for the Bosch UniversalPump 18V cordless air pump and a wide range of compatible 18V POWER FOR ALL devices. The UniversalPump inflates tires, sports balls, and air mattresses at up to 10.3 bar — so the battery needs to hold voltage under sustained pressure demand. This pack is rated at 36Wh and uses the standard Bosch 18V slide-rail format.
- POWER FOR ALL platform compatibility: All listed models share the same 18V voltage rail, slide-on connector, and BMS communication protocol — one battery moves between the pump, fan, drill, and sprayer without adapters.
- Bench tested on actual hardware: We ran full charge/discharge cycles — the BMS held voltage steady under load and triggered the low-voltage cutoff cleanly without dropping the pack into an error state.
- First charge after storage: If the pack has been sitting, run a full charge before use — Li-ion cells that ship partially charged benefit from one complete cycle to let the BMS calibrate the state-of-charge display accurately.
Why sustained pressure loads stress an 18V battery differently than a drill
An air pump running at 10.3 bar draws current continuously rather than in short bursts. That sustained draw generates more heat in the cells than intermittent tool use. The BMS in this pack monitors cell temperature alongside voltage, throttling output before heat becomes a problem. Avoid back-to-back inflation sessions without a short rest between them — the pump motor and the battery both benefit from it.
Pump stops mid-inflation and won't restart
This usually means the BMS triggered a low-voltage cutoff, not a dead cell. High-pressure inflation near the 10.3 bar ceiling pulls peak current, which can sag cell voltage briefly and trip the cutoff early. Remove the battery, wait two minutes, then reseat it — most BMS circuits reset once the load is removed and voltage recovers. If the pump doesn't restart after a full recharge, check the rail contacts for debris before assuming a fault.
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
Pump stops mid-inflation and won't restart until it cools down — is the battery dying or is something else cutting it out?
That's thermal cutoff, not a dead battery — sustained high-pressure inflation draws continuous current, and an 18V 2Ah pack heats up fast under that load. The battery's protection circuit trips before the cell voltage bottoms out, so the pack reads fine on a charger but cuts out again the moment pressure builds. Let the battery cool for 15 minutes completely separated from the pump, then check the resting voltage with a multimeter — a healthy 18V Li-ion should sit between 19.8V and 20.5V fully charged. If it reads below 18V at rest, the cells are worn and the thermal threshold will keep triggering earlier and earlier.
The pump runs but pressure maxes out way lower than 10.3 bar and the motor sounds like it's straining — replaced the battery and it's still doing it?
Voltage sag under load is the likely culprit — even with a new battery installed, a 2000mAh pack at this voltage class will sag noticeably when the pump is working against high back-pressure, and the motor controller throttles output to compensate. Check that the battery is fully charged before testing; a pack at 70% charge can sag enough under compression load to drop effective motor torque. If pressure is still low on a full charge, check the pump nozzle adaptor seal — a small air leak at the valve connection mimics low-pressure output and the motor will labor trying to overcome it.
New battery charged fine but the pump just clicks once and does nothing when I press the trigger — no LED fault, nothing?
A single click with no spin usually means the battery's cell-level protection circuit is active because the pack sat discharged for too long before use — Li-ion cells that drop below roughly 2.5V per cell enter a locked state that a standard charger won't always recover on the first cycle. Put the battery on the charger and watch the charge indicator for the first two minutes; if the light flashes an error code or cycles on and off instead of holding steady, the pack is in recovery mode and needs a full slow-charge cycle to unlock. If the charger shows a solid charge light and the pack still clicks-and-dies in the pump, measure the battery output terminals under load with a multimeter — you're looking for voltage collapse below 14V the instant the trigger is pressed.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Related Products
Engineered for Performance. Built to Last.
Check out our top-rated selection of reliable products built to last. We offer high-quality options that deliver consistent performance for all your needs.
-
Up to 10% offNew arrival
BatteryWeb
AL-KO 18V 5000mAh Cordless Gardening Tool Replacement Battery
1.83 lb
Sale priceFrom $108.99 USD Regular price $120.99Unit priceIn stock (60 units) -
-
Up to 17% offNew arrival
BatteryWeb
Flymo 18V 3000mAh Li-ion Compatible Battery FB18V2.5
1.75 lb
Sale priceFrom $90.99 USD Regular price $109.99Unit priceIn stock (300 units) -
-
Up to 21% offNew arrival
BatteryWeb
Flymo 18V 5000mAh Cordless Trimmer Replacement Battery
1.83 lb
Sale priceFrom $110.99 USD Regular price $138.99Unit priceIn stock (60 units) -
-
Up to 19% offNew arrival
BatteryWeb
Bosch 18V 3000mAh Li-ion Replacement Battery BHZUB1830
1.75 lb
Sale priceFrom $90.99 USD Regular price $111.99Unit priceIn stock (303 units) -
-
Up to 19% offNew arrival
BatteryWeb
Bosch 18V 5000mAh Cordless Air Pump Replacement Battery
1.83 lb
Sale priceFrom $110.99 USD Regular price $135.99Unit priceIn stock (60 units) -
-
Up to 19% offNew arrival
BatteryWeb
Gardena PowerMax 18V Replacement Battery 3000mAh Li-ion
1.75 lb
Sale priceFrom $90.99 USD Regular price $112.99Unit priceIn stock (300 units) -
-
Up to 10% offNew arrival
BatteryWeb
Gardena 18V Lawnmower Compatible Battery 5000mAh Li-ion
1.83 lb
Sale priceFrom $110.99 USD Regular price $121.99Unit priceIn stock (60 units) -
-
Up to 12% offNew arrival
BatteryWeb
40V GreenWorks Chainsaw Replacement Battery 5000mAh
2.9 lb
Sale priceFrom $162.99 USD Regular price $185.99Unit priceIn stock (51 units) -
