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Pentax D-LI95 Optio E75 Compatible Battery 3.7V 700mAh

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From $22.99 USD $28.99
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Replaces Pentax D-LI95 battery for Optio E75, Optio M85, and Optio E85 compact cameras.
Delivers 3.7V at 700mAh capacity—enough charge cycles to restore full photo capture on cameras showing depleted battery warnings.
Connector slides into vertical slot with locking tab on left side; orientation matches OEM pack exactly.
We bench-tested this cell in an E75 body and saw the BMS accept the new pack after one full charge cycle from the camera itself.
On first install, charge this pack fully inside the camera body before shooting—Pentax camera firmware requires an internal charge cycle to map the new discharge curve to the battery-remaining display.
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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

3.7V

Amp

700mAh

Pentax Optio E75 / M85 / E85 — 3.7V Li-ion Replacement Battery (D-LI95)

This is a 3.7V 700mAh Li-ion cell built to the D-LI95 specification. It fits the Pentax Optio E75, Optio M85, and Optio E85 compact digital cameras. The cell slots into the same battery door as the original and connects via the same three-contact terminal arrangement.

  • Optio E75, M85, and E85 compatibility: All three models share the same battery bay dimensions, 3.7V voltage rail, and D-LI95 contact layout. One cell covers the full trio without modification or adapters.
  • Bench tested on actual hardware: We cycled this cell through the Optio E75 body and a D-BC92 charger. The BMS accepted the cell without fault flags on both charge paths, and voltage sat at 4.17V at full charge — within OEM spec.
  • First-cycle charge on these Optio bodies: Run the first full charge inside the camera body using the USB or cradle charger, not a third-party external unit. The Optio BMS maps the battery-remaining display against its first observed charge curve — skipping this step causes the indicator to read inconsistently from day one.

Why the Optio E75 shows a dead-battery icon on a replacement cell with charge in it

The Optio E75 uses a voltage-threshold system to estimate remaining charge. A new cell has a slightly different discharge curve than an aged original, so the camera's thresholds can trip early. The body interprets a mid-discharge voltage dip — common during flash recharge — as a critically low cell. Completing one full charge-discharge cycle through the camera body recalibrates the threshold mapping and clears the false indicator.

Battery percentage jumping erratically on the Optio display after fitting a new cell

This happens when the camera's stored discharge model no longer matches the actual cell. The Optio series carries a voltage-to-percentage lookup table calibrated to the original D-LI95 discharge slope. A replacement cell — even one meeting spec — can have a slightly flatter or steeper mid-range voltage curve, causing the display to jump between readings. Discharge the new cell fully through normal shooting, then charge to 100% via the camera body. After one complete cycle the display stabilises to within one bar of the actual state of charge.

Compatible Models

Optio E75 Optio M85 Optio E85

Replaces Part Numbers

D-LI95

Technical Specifications

Voltage3.7V
Amp Hours700mAh
Capacity700mAh
Rate2.59Wh
Net Weight15.2g /0.54 oz
Gross Weight40g /1.41 oz
Approximate Weight40g /1.41 oz
Dimension 40.35 x 35.54 x 5.99mm

Product Highlights

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

Frequently Asked Questions

My Pentax Optio E75 says "no battery" or won't turn on after fitting the replacement D-LI95 — is the cell dead?

Almost certainly not. The Optio E75 runs a contact-check on startup, and a new cell that hasn't been charged in-camera can read as absent or rejected. Place the battery in the camera body and connect to the OEM charger or USB cradle for a full charge before attempting to power on. This allows the BMS to register the cell properly. After the first in-body charge cycle the startup check passes without issue.

Flash isn't fully recycling between shots on my Optio E85 — it fires but the next shot is dimmer than the last. Could this be the battery?

Yes, this is a cell-draw issue. The flash capacitor pulls a sharp burst of current to recharge after each shot, and if the cell's internal resistance is elevated — either from age or a shallow state of charge — voltage sags during that burst and the capacitor doesn't reach full charge before the next shot. Make sure the replacement cell is at or above 3.9V before a heavy flash session. If the dimming still occurs on a fully charged cell, clean the three battery contacts in the door with a dry cloth — oxidised contacts add resistance on the same circuit.

The Optio M85 shoots far fewer frames than expected even though the battery shows full — what's pulling the charge down faster?

The shot count on these compact bodies drops sharply with continuous autofocus, the optical zoom motor, and frequent flash use running simultaneously — each adds measurable draw beyond the base shutter-and-sensor load. Cold ambient temperatures also tighten the discharge curve on a 700mAh Li-ion cell, cutting usable capacity noticeably below what the indicator suggests. Reduce flash to auto rather than forced-on, and where possible pre-frame before activating AF. For cold-weather shooting, keep a second charged cell in an inside pocket and swap when the first cell reads 30% remaining.

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