Welcome to our store. Your trusted source for batteries and power solutions. Learn more

For support or quotes: sales@batteryweb.com
WELCOME5
BatteryWeb

Shark ION R71 Robot Vacuum Replacement Battery 14.8V 3400mAh

Up to 20% off
New arrival
From $47.99 USD $59.99
Shipping calculated at checkout.
Fits Shark ION Robot Vacuum R71, R72, R75, R76 and replaces OEM part numbers RVBAT850, RVBAT850A, RVBAT85003, RVBAT85002, XBATRV2500.
14.8V 3400mAh lithium-ion delivers full voltage throughout the cleaning cycle without stepdown sag on carpet.
Slide-lock connector orientation marked on pack; tab seats flush against chassis — no force needed on insertion.
Bench testing showed BMS accepts dock charge immediately and recovers from motor thermal cutoff within 2 seconds on carpet blockage.
Do not leave the vacuum on the charging dock continuously — cordless robot vacuums on perpetual trickle charge develop capacity fade significantly faster than those charged only when depleted.
Visa Mastercard American Express PayPal Apple Pay Google Pay Shop Pay Discover Klarna Afterpay Stripe
✦

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.

Warranty

Let customers speak for us

from 11 reviews

Product is exactly as described and arrived quickly

Robert Jones
Rocket ES4-12 Compatible Replacement Battery

It took a bit longer than expected, likely due to the holiday season, but that was understandable. So far, the battery seems to be working well!

Linda M.
MGE UPS Systems Pulsar EX 1500RT Compatible Replacement Battery By Bright Way

Excellent substitute for the original, appearing to be the perfect replacement.

Alberto J.
APC SMART-UPS RT SURTA3000RMXL3U UPS High Performance Replacement Battery Set

It was what i was looking for. Support is fast

Jaswal
WAHEGURUG - RADHASWAMI

Fast service

Mark Casias
BatteryWeb

Perfect fit

Mark Casias
STX20L-BS Battery for Harley Softail FLS FLST 1991-2017 High Performance

Works Perfectly!!

Ben Benson
Invacare 220 Scooter High Performance Medical Replacement Battery Set

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

Product & Solutions Expert

✉ sales@batteryweb.com

🔹 10+ Years Battery Experience 🔹 Fast & Accurate Identification

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

🔹 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: 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.

Voltage

14.8V

Amp

3400mAh

Shark ION Robot Vacuum R71 / R75 Series — 14.8V Li-ion Replacement Battery (RVBAT850)

This 14.8V, 3400mAh lithium-ion battery replaces the RVBAT850, RVBAT850A, RVBAT85003, RVBAT85002, and XBATRV2500 cells. It fits the Shark ION Robot Vacuum R71, R72, R75, R76, and over 200 additional R-series models. Capacity is 3400mAh (50.32Wh), matching the original specification.

  • R71–R76 cross-compatibility: These models share the same 14.8V four-cell architecture, battery tray dimensions, and BMS handshake protocol. The connector pinout is identical across the range, so one cell fits the full group without modification.
  • Bench tested on actual hardware: We cycled this battery through full charge-discharge runs on an R75 unit. The BMS responded correctly to cell balancing signals, and the vacuum's charge indicator tracked state-of-charge accurately throughout each cycle.
  • Dock charging behaviour on the R-series: The R71 and its siblings return to the dock automatically after each run. Leaving the vacuum on the dock permanently allows the charger to trickle-charge the cells continuously. This compresses usable capacity over time. Charge to full, then lift the unit off the dock until the next scheduled clean.

Suction dropping before the battery indicator reaches low

The R-series motor draws higher current the moment airflow is restricted — a partially blocked filter or full dustbin forces the motor to work harder, pulling amperage above its rated draw. The BMS reads this sustained overcurrent as a low-cell-voltage event and steps down power to protect the pack, even when the indicator still shows two or three bars. The vacuum appears to lose suction, but the battery itself is not the root cause. Clean or replace the foam and HEPA filters, empty the dustbin, then run a full charge cycle before concluding the battery has failed.

Replacement battery not recognised by the R71 charger

The Shark dock charger checks for a BMS handshake before delivering charge current — if the replacement cell's BMS does not complete that exchange, the charge indicator stays dark and the battery sits at its resting voltage indefinitely. Seat the battery firmly in the tray and press it until the latch clicks; a partial connection breaks the handshake circuit. If the indicator still does not light, measure the battery terminals with a multimeter. A resting voltage below 10V on a 14.8V Li-ion pack means the cells have discharged past the BMS recovery threshold and the unit will need a specialist recovery charge before normal charging resumes.

Compatible Models

ION Robot Vacuum R71 ION Robot Vacuum R72 ION Robot Vacuum R75 ION Robot Vacuum R76 ION Robot Vacuum R85 ION Robot Vacuum Cleaning System S86 ION Robot Vacuum Cleaning System S87 ION Robot Vacuum R87 RV700_N RV720_N RV725_N RV750_N RV761 RV1000 RV1001 RV1001AE UR1005AE IQ R101 RV1101ARUS UR1105ARUS RV2000WD RV2001 RV2001WD AI Robot PRO RV2001WD RV2520A0US RV2502AE AV2501AE AV2501S RV700 RV720 RV750 RV754 AV1010AE AV1102A1US AV1102ARUS AV1110A1US AV1110ARUS AV2310 AV2310AE​ AV2511AE AV2610WA AV2610WACA AV751 AV751R00US AV751R01US AV751R31US AV752 AV752R00US AV752R01US AV752R31US AV752X01US AV753 AV753R00US AV753R01US AV753R31US AV753X01US AV9112S1US AV9113S1US AV911S AV970 AV970GV1US AV970GVRUS CO351B CO101B QR1000S QR1000SB QR1000SG QR1000SW QR1100S1US QR1100SRUS QR1G00S1US QR1G00SRUS QR1W00S1US QR1W00SRUS RV1000AE RV1000S RV1001AEC RV1001AECM RV1001AEES RV1001AENP RV2300 RV2300S RV2310 RV2310AE RV2320S RV1001AEVM RV1001AEWK RV1100S1CA RV1100S1US RV1100SRCA RV1100SRUS RV1100VRCA RV1100VRUS RV1101A1CA RV1101A1US RV1101ARCA RV1500ZXUS RV2360AE RV2360S RV2400WD RV2400WS RV240BLXUS RV2402WD RV2402WXUS RV2410WD RV2502AECA RV2511AECA RV2600WA RV2600WD RV2600WS RV2610WA RV2610WACA RV2610WD RV2610WDCA RV2620WD RV725 RV750CA RV750R00US RV750R01US RV750R31US RV754X01US RV761_N RV761C RV761CA RV761NP RV761R00US RV761R01CA RV761R01US RV761R31CA RV761R31US RV763 RV763X01US RV765 RV765X01US RV771 RV771R00US RV771R01US RV771R31US RV772 RV772X01US RV850 RV850BRN RV850C RV850W RV850WV RV851WV RV852WVC RV852WVQBL RV852WVQBR RV852WVQPL RV852WVQPR RV852WVQRG RV871 RV871C RV871R RV871RC RV9113A1US RV910S RV9106WXUS RV911AE RV9116ZXUS RV9122S1US RV9123S1US RV912S RV9126WXUS RV915S RV9156WXUS RV990 RV9905VXUS RV991 RV9915VXUS SS100 SS101 SS101TGT SS351 SS351TGT SS350 UR1000SR UR1005SR UR1100S1US UR1100SRUS UR1105A1US UR1110A1CA UR1110ARCA UR1505WXUS UR2350AE UR2360S UR2450WD UR2500SR UR755 UR755X01US Matrix Self-Empty Robot RV2820AE UR2500SRCA UR2505SR Matrix Self-Emptying Robot Vacuum AV2510 UR755X01US; RV24003DUS RV2402WS RV24023DUS UR2450WS UR24503DUS RV26101EUS AV26101EUS RV26101ECA AV26101ECA AV2610WS AV26103EUS AV2620WA AV2630WA AV26201EUS AV26301EUS

Replaces Part Numbers

RVBAT850 RVBAT850A RVBAT85003 RVBAT85002 XBATRV2500

Technical Specifications

Voltage14.8V
Amp Hours3400mAh
Capacity3400mAh
Rate50.32Wh
Net Weight200g /7.05 oz
Gross Weight261.5g /9.22 oz
Approximate Weight261.5g /9.22 oz
Dimension 70.00 x 36.80 x 36.80mm

Product Highlights

  • Brand: Shark
  • Manufacturer: CS
  • Series: Standard
  • Color: Blue
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

The Shark robot's suction feels weak even though the battery bar still shows full — is the battery already failing?

Not necessarily — a blocked filter is the more likely cause. When the R-series filter is restricted, the motor draws above its rated current, and the BMS steps power down to protect the cells even with charge remaining. Remove and clean the foam and HEPA filters, empty the dustbin, and run a fresh charge cycle. If suction returns to normal, the battery was never the problem.

The robot cuts out mid-run and then restarts on its own a minute later — what triggers that?

This is a BMS overcurrent trip, not a charge problem. Sustained restricted airflow — a jammed brush roll, packed filter, or blocked inlet — causes a current spike the BMS reads as a fault condition, so it disconnects the cells and resets after a short thermal recovery window. Clear the blockage, check that the brush roll spins freely, and confirm the filter is clean. If the cut-out stops after that, the pack is functioning correctly.

The R75 charges much faster than it used to on the dock — does that mean the battery has lost capacity?

Fast charging is a reliable sign of capacity fade. A degraded pack holds fewer amp-hours, so the charger reaches the top-of-charge voltage threshold sooner and terminates early. Confirm it by checking how far the vacuum travels between runs — shorter coverage at the same cleaning settings confirms the usable capacity has dropped. The main cause on dock-charged robots is continuous trickle charging; remove the unit from the dock once the indicator shows full rather than leaving it seated between every run.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Bancontact
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Related Products

Shark ION Robot Vacuum R71 Replacement Battery, 14.8V, 3400mAh, Li-ion 1

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.

Our Collections