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Two rectangular lithium-ion camera batteries with dark grey plastic casings and gold contact strips

Kastar

Kastar BP-511/BP-511A 2-pack 7.4V 2600mAh camera battery

SKU CH-WE4N-H274X

Two lithium-ion packs deliver 7.4 V and 2600 mAh for compatible Canon cameras and chargers

  • Total capacity19.24 Wh
  • Pack contents2 Batteries
  • Battery chemistryLi-Ion
  • Product typeBattery
  • Product dimensions3 × 2 × 2 in
  • Key featuresHigh Capacity and Manufacture Price.
  • Two-pack delivers 2600 mAh each for extended shooting time
  • 4 V lithium-ion chemistry matches original BP-511/BP-511A specifications
  • Built-in protection guards against over-charge, over-discharge, over-voltage, over-current and over-heating
  • UL1642 and CE certified cells ensure safe replacement for Canon cameras
  • Compatible with EOS 5D, 10D, 20D, 30D, 40D, 50D and ZR series models

Two-pack replacement batteries

Kastar supplies two lithium-ion cells rated at 7.4 V and 2600 mAh each, delivering 19.24 Wh per pack. They are built to replace Canon BP-511 and BP-511A originals and fit a long list of Canon camcorders and EOS cameras. The cells include over-charge, over-discharge, over-voltage, over-current and over-heating protection circuits and meet UL1642 and CE safety standards. The pack suits photographers and videographers who want a spare set ready for extended shoots.

For Canon BP-511/511A users

The batteries suit owners of compatible Canon EOS, PowerShot, Optura, ZR and DM-FV models who need reliable backup power. They are not for cameras that require a different voltage or form factor, nor for users who need a charger included in the box. Buyers with non-Canon equipment or proprietary battery mounts should look elsewhere.

7.4 V 2600 mAh lithium-ion specification

Voltage and capacity are the decisive figures for compatibility and run-time. Each cell provides 7.4 V and 2600 mAh, matching the original Canon specification so the camera’s fuel gauge and charging logic work correctly. The 19.24 Wh energy rating confirms the capacity claim and lets you estimate shooting time per charge.

How it compares

Measured against everything we stock in Camera Batteries, Grips & Chargers, at today’s prices. Recalculated every night.

Price $11.99
Cheaper than about 75% of the 5,900 comparable items (median $17.99).

Specifications

Product
Brand nameKastar
Model nameBP-511 BP-511A
Part numberBA-2B-BP511-V
Total capacity19.24 Wh
Product typeBattery
Power
Battery chemistryLi-Ion
Size & build
Product dimensions3 × 2 × 2 in
In the box
Pack contents2 Batteries

Other versions of this model

5 more in the same range

Questions about this item

How do I insert the BP-511A pack into my Canon EOS 30D, and which way do the contacts face?

Slide the battery into the grip until the latch clicks; the three gold contacts must face the camera body so they meet the matching pins inside the compartment.

When will the lithium-ion cells need replacing, and how can I extend their cycle life?

After roughly 300 to 500 full charge cycles capacity drops below 80 %; store at 40–60 % charge in a cool place and avoid leaving the pack fully depleted for weeks.

What thermal limit triggers the built-in protection circuit during long video recording?

The over-heating protection trips when the internal cell temperature exceeds the safety threshold, cutting power until the pack cools down.

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