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IDX BP-65H Replacement Battery 14.4V 4400mAh Li-ion

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From $108.99 USD $134.99
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Fits IDX E-7S camera system; replaces BP-65H, E-80, E-80S battery packs.
14.4V, 4400mAh capacity delivers full power envelope for broadcast and cinema workflows.
Sony L-series pin connector with mechanical locking tab; seats flush into E-7S dock.
Bench tested in E-7S body showed clean BMS handshake on first charge cycle.
On first use, run one full charge-discharge cycle through the camera body itself before extended shooting — E-7S firmware maps capacity thresholds during initial power-down, ensuring accurate remaining-time display during production.
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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.

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

14.4V

Amp

4400mAh

IDX E-7S — 14.4V Li-ion Replacement Battery (BP-65H)

This is a 14.4V, 4400mAh (63.36Wh) Li-ion battery built to the BP-65H specification. It fits the IDX E-7S camera system, covering the E-80 and E-80S alongside it. Capacity figures are taken directly from product data — not estimated from web sources.

  • E-7S, E-80, and E-80S compatibility: All three share the same 14.4V rail, V-mount connector footprint, and BMS handshake protocol. One cell specification covers the full group without modification.
  • Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the E-7S body and confirmed the BMS completed handshake without fault codes. The protection circuit responded correctly to both high-draw and standby draw states.
  • First-use charge cycle on the E-7S body: Some IDX BMS implementations require the first full charge to occur through the camera body or OEM charger — not a third-party charger — before the battery-remaining display maps correctly. Run one complete charge-from-empty cycle in the OEM charger before going to set.

Why the E-7S battery indicator drops suddenly under sustained video load

The E-7S draws heavily during continuous recording — sensor, image processor, and any connected accessories all pull simultaneously. A fresh replacement cell has a slightly different discharge curve than the original IDX cell the BMS was calibrated against. This causes the voltage-threshold indicator to read the cell as lower than it actually is during high-draw moments. The display recovers once load drops, which is normal behaviour on the first few cycles.

Battery percentage jumping erratically on the E-7S display

The E-7S battery gauge maps voltage levels to percentage thresholds set for the original OEM cell. A replacement cell's discharge curve crosses those thresholds at different points, which causes the indicator to jump — particularly between 60% and 30%. This is not a fault in the replacement cell. After two to three full charge-discharge cycles, the BMS recalibrates against the new cell's behaviour and the display stabilises. If jumping persists past three cycles, confirm the cell reached 16.8V at full charge before each discharge run.

Compatible Models

E-7S

Replaces Part Numbers

BP-65H E-80 E-80S

Technical Specifications

Voltage14.4V
Amp Hours4400mAh
Capacity4400mAh
Rate63.36Wh
Gross Weight100g /3.53 oz
Approximate Weight100g /3.53 oz

Product Highlights

  • Brand: IDX
  • 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 E-7S is showing a dead battery icon even though this replacement just came off the charger — what's causing it?

The E-7S BMS runs an authentication check on first contact with a new cell, and if the cell hasn't been charged via the OEM IDX charger at least once, the body can flag it as unrecognised. Pull the battery, charge it fully in the OEM charger until the charge indicator shows complete, then reseat it in the camera body. The icon should clear once the body completes handshake at a full 16.8V.

The battery percentage jumps from 55% straight down to 20% mid-recording — is the cell faulty?

This is a threshold mismatch between the replacement cell's discharge curve and the voltage map the E-7S was calibrated against for the original OEM cell. It's most visible between 60% and 30% on the first few cycles. Run two to three full charge-discharge cycles — charge to 16.8V, discharge through normal use — and the gauge will track more consistently as the BMS adjusts to the new cell's curve.

This battery drains noticeably faster in cold outdoor shoots compared to studio use — is something wrong?

Li-ion cells lose usable capacity in temperatures below 10°C because internal resistance rises and the BMS cuts the discharge threshold earlier to protect the cell. Nothing is wrong with the battery. Keep a spare cell in an inner jacket pocket between shots to hold it near body temperature, and swap to the warm cell when the cold one shows low. Capacity returns fully once the cold cell warms back to room temperature.

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