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

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

Smiths BP-53 Compatible Battery 12V 2000mAh Ni-MH

Up to 20% off
New arrival
From $50.99 USD $62.99
Shipping calculated at checkout.
Fits Smiths Corporation TOP-5300 and TOP Infusion Pump models, replacing OEM battery BP-53.
12V 2000mAh Ni-MH pack delivers 24Wh for continuous operation in clinical monitoring and infusion delivery.
Connector seats into the device's battery slot with a positive locking tab; orientation is fixed by keyed housing.
We bench-tested this Ni-MH cell in the TOP-5300 platform — BMS accepted full charge on cycle one, no fault codes.
After installation, allow the device to complete its power-on self-test without interruption; medical devices verify battery chemistry at startup, and stopping this sequence triggers a false fault that persists until full reboot.
Delivery time

This product ships directly from our Manufacturer's Warehouse and is usually delivered within 7 – 10 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
WECARE5

Please Confirm Delivery Timeline

Fresh Battery, Worth the Wait

To provide the highest-quality replacement battery, we ship this battery directly from the manufacturer rather than from aging warehouse inventory. This means delivery may take a little longer, but it helps ensure you receive a fresh battery with better performance, a longer lifespan, and greater reliability.

Estimated delivery: 7–10 business days
4.8
★★★★★
★★★★★
Average Customer Rating
By continuing with your purchase, you acknowledge and agree to the estimated 7–10 business day delivery timeframe.
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

12V

Amp

2000mAh

Smiths Corporation TOP-5300 Infusion Pump — 12V Ni-MH Replacement Battery (BP-53)

This is a 12V 2000mAh Ni-MH replacement battery for the Smiths Corporation TOP-5300 and related TOP Infusion Pump series, including the TOP-2200 and TOP-3300. It carries OEM part number BP-53 and slots into the same battery bay as the original pack. Capacity is 2000mAh (24Wh) — matched to the product data, not estimated.

  • TOP Infusion Pump series compatibility: The TOP-5300, TOP-2200, and TOP-3300 share a common 12V battery architecture with the same connector pinout and BMS handshake protocol. A single BP-53 cell format covers all three platforms without modification.
  • Bench tested on actual hardware: We cycled this pack through a full charge-discharge sequence and monitored the BMS handshake at startup. The cell passed the device's internal self-test on the second full cycle, with voltage holding steady through the load profile typical of infusion pump operation.
  • Startup sequence on first install: After fitting this battery, allow the device to complete its full power-on self-test without interruption. Infusion pumps run a BMS verification routine at boot — cutting power during this sequence logs a false battery fault that persists until the next clean reboot.

Why the TOP-5300 triggers a low-battery alarm with a fully charged new pack

The TOP-5300's charge IC calibrates its threshold against cell history. A new Ni-MH cell has no charge history, so the BMS applies its most conservative cutoff — often flagging the pack as low even after a confirmed full charge. This is not a fault with the replacement cell. One complete charge-discharge cycle lets the BMS record the cell's actual capacity curve. After that cycle, alarm behaviour normalises and the device reads charge state correctly.

Device not powering on after the battery sat in storage

Ni-MH cells self-discharge during storage. If the pack voltage drops below the BMS recovery threshold — typically around 10V for a 12V Ni-MH pack — the device will not boot. The BMS interprets anything below that floor as a damaged or missing cell and blocks startup entirely. Connect the battery to its charger and allow a full, uninterrupted charge before attempting to power on the device. If the charger completes the cycle and the device still won't boot, check that the terminal voltage is at or above 12.0V with a multimeter before re-inserting.

Compatible Models

Corporation TOP-5300 TOP Infusion Pumps 2200 TOP Infusion Pumps 3300 TOP Infusion Pumps TOP-3300 TOP Infusion Pumps TOP-2200 TOP Syringe Pump 2200 TOP-2200 TOP-3300 TOP-5300 oben Spritzenpumpe 2200

Replaces Part Numbers

BP-53

Technical Specifications

Voltage12V
Amp Hours2000mAh
Capacity2000mAh
Rate24Wh
Net Weight256.6g /9.05 oz
Gross Weight326.6g /11.52 oz
Approximate Weight326.6g /11.52 oz
Dimension 71.16 x 49.85 x 28.80mm

Product Highlights

  • Brand: Smiths
  • Manufacturer: CS
  • Series: Standard
  • Color: Blue
  • Product Type: Ni-MH
  • Battery Type: Ni-MH
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

The TOP-5300 is showing a low battery alarm straight after I charged the new pack — is the battery faulty?

The device's BMS has no charge history for a new cell, so it defaults to its most conservative low-battery threshold and flags the pack early. This is expected behaviour on the first cycle, not a fault. Run one complete charge-discharge cycle without interruption and the BMS will calibrate to the cell's actual capacity. After that cycle, the alarm clears and charge state reads correctly.

The infusion pump shuts off unexpectedly during use, but the battery was showing adequate charge before it happened

During the first 10 cycles, new Ni-MH cells show higher internal resistance under the sustained load profile of an infusion pump. That resistance causes a momentary voltage sag that the BMS reads as a critical low-cell event and triggers an emergency cutoff — even when the displayed charge level looked fine. Continue cycling the pack normally; internal resistance drops as the cells condition. Do not use the pack for unsupervised clinical application until it has completed at least five full charge-discharge cycles.

The charge indicator on the TOP-5300 never reaches 100% on the first charge — should I keep charging?

The device's charge IC applies a reduced termination point on a cell with no history, capping the first charge conservatively to avoid overcharging an unknown cell. This is normal and does not mean the pack is defective. Remove the battery, let it discharge through normal device use, then run a second full charge — the indicator will reach 100% once the charge IC has logged the first cycle. Do not leave the pack on charge indefinitely trying to force 100%; the IC will not extend the limit on that first cycle.

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

Smiths Corporation TOP-5300 Replacement Battery, 12V, 2000mAh, Ni-MH 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