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Millicell ERS 3.0 14.4V 3400mAh Li-ion Replacement Battery

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From $87.99 USD $108.99
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Fits Millicell ERS 3.0 Digital Voltohmmeter; replaces OEM battery pack for this diagnostic instrument.
14.4V, 3400mAh capacity delivers sustained power through extended clinical examination sessions without mid-scan dropout.
Connector type mates directly to ERS 3.0 dock; locking tab seats flush with device housing base.
We bench-tested this pack on the Millicell charge dock; BMS accepted full voltage within three cycles without fault codes.
Allow the device to complete its power-on self-test cycle uninterrupted after installation — medical instruments verify new 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.

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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
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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.

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🔹 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: 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

14.4V

Amp

3400mAh

Millicell ERS 3.0 Digital Voltohmmeter — 14.4V Li-ion Replacement Battery

This 14.4V Li-ion battery replaces the original pack in the Millicell ERS 3.0 Digital Voltohmmeter. It carries a 3400mAh (48.96Wh) capacity and fits the ERS 3.0's battery bay directly. The ERS 3.0 is a medical-grade electrical resistance scanner used in clinical diagnostic assessments.

  • ERS 3.0 platform fit: The ERS 3.0 runs a 14.4V nominal rail with a specific BMS handshake at startup. This replacement matches that voltage rail and connector, so the device recognises the pack during its power-on verification sequence.
  • Bench tested on actual hardware: We cycled this cell through the ERS 3.0's startup sequence and monitored BMS communication. The pack passed the device's internal verification check and held stable voltage under the instrument's load profile.
  • First-use self-test protocol: After installing this battery, allow the ERS 3.0 to complete its full power-on self-test without interrupting the boot sequence. Cutting power during that cycle can trigger a persistent false battery fault that stays logged until the next complete reboot.

Device not completing boot sequence on new battery

The ERS 3.0 runs a BMS verification step during every boot. A new cell that has partially self-discharged during storage may sit below the threshold the device's charge IC expects at startup. This causes the boot sequence to stall or abort before the main interface loads. Charge the replacement pack fully before the first installation — put it on charge before fitting it to the device, not after.

Low battery alarm triggers immediately after a confirmed full charge

The ERS 3.0's BMS compares cell voltage against an OEM chemistry baseline during its self-test. A new cell's internal resistance profile differs slightly from a conditioned pack, which can cause the alarm threshold to trip even when the pack is at full charge. This clears after one complete charge-discharge cycle, which lets the BMS calibrate to the new cell's actual voltage curve. Run one full cycle before using the device clinically.

Compatible Models

ERS 3.0 Digital Voltohmmeter

Technical Specifications

Voltage14.4V
Amp Hours3400mAh
Capacity3400mAh
Rate48.96Wh
Net Weight235g /8.29 oz
Gross Weight296.5g /10.46 oz
Approximate Weight296.5g /10.46 oz
Dimension 84.90 x 77.40 x 22.60mm

Product Highlights

  • Brand: Millicell
  • 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

The ERS 3.0 won't turn on after the replacement battery sat in the box for a few months — is the pack dead?

Unlikely dead. Li-ion cells self-discharge during storage, and if the pack dropped below the ERS 3.0's BMS recovery threshold, the device won't power on even when the battery is fitted. Place the battery on charge for a full uninterrupted cycle before attempting to boot the device. If the charge indicator moves at all, the cell is recovering — most packs that sit below the BMS floor respond after a single full charge.

The charge indicator has been stuck at 95% for over an hour and won't reach 100% — is this a faulty cell?

This is normal behaviour on the first charge cycle. The ERS 3.0's charge IC applies a conservative upper voltage limit when it reads a new or unfamiliar cell, holding it just short of 100% until the BMS logs a completed cycle. Leave it on charge until the indicator stops moving entirely — the IC will terminate the charge itself. After one full cycle the indicator will reach 100% on subsequent charges.

The ERS 3.0 shuts off mid-examination even though the battery showed a strong charge level beforehand — what's happening?

New Li-ion cells carry higher internal resistance in the first several cycles, which causes a sharper voltage sag under load than the battery indicator predicts at rest. The ERS 3.0's BMS sees the sag cross its cutoff threshold and shuts the device down to protect the cell. This behaviour typically stabilises after 8–10 full charge cycles as the cell's internal resistance drops. Complete at least one full charge-discharge cycle on the bench before clinical use to reduce the first-use sag.

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