Promaster Li‑ion Replacement Battery for Leica BP‑SCL6 – Compatible with Q3, Q2, SL2, SL2‑S, SL3, SL3‑S Cameras (#90091)

Promaster BP‑SCL6 vs. Leica Original: How to Choose the Right High‑Performance Battery for Your Leica Q3, Q2, SL2, SL2‑S, SL3, SL3‑S

If you’re shooting with a Leica Q3, Q2, SL2, SL2‑S, SL3, or SL3‑S, you didn’t settle for “good enough.” You chose precision optics, robust build, and exceptional image quality. A low-battery warning can interrupt your creative flow during a shoot when your battery loses capacity.

When you need a spare battery for the BP‑SCL6 platform, you have options. You can pay Leica's high price, gamble on a no-name brand, or pick a trusted third-party option like the Promaster #90091. It offers the same performance without the extra cost.

This guide explores the Promaster Li-ion Battery for Leica BP-SCL6. It showcases its unique features. It compares to the original Leica battery. Plus, it explains why it’s a smart, reliable choice for photographers who need steady power.

What Exactly Is the Promaster BP‑SCL6 Battery ( #90091 )?

The Promaster #90091 is a high‑quality lithium‑ion battery engineered to match or exceed the specifications of the Leica BP‑SCL6 original. It’s designed for full compatibility with all Leica cameras that use the BP‑SCL6 platform: Q3, Q2, SL2, SL2‑S, SL3, and SL3‑S.

A fresh Promaster BP‑SCL6 battery gives you the same number of shots per charge as the Leica original – so you can keep shooting without compromise.

Promaster vs. Leica Original vs. Cheap Generic: What’s the Real Difference?

Not all third‑party batteries are created equal. Here’s how the Promaster stacks up against the Leica original and the no‑name generics you might find for half the price.

 Important for Leica shooters
Leica cameras are sensitive to battery communication. A cheap generic may cause the camera to freeze, fail to wake from sleep, or show a “battery cannot be used” message. The Promaster is designed to avoid those issues – it’s built to the same standards as the original, not a hacked chip.

How Many Batteries Do You Really Need?

Your shooting style determines the ideal number of batteries to carry. Here’s a quick guide for Leica Q and SL users.

For most serious enthusiasts, two batteries (one in camera, one spare) is the sweet spot. For pros, three or more ensures you never miss a shot.

What Realistic Runtime Can You Expect from a BP‑SCL6 Battery?

Runtime depends on camera model and usage. Here are approximate shot counts per full charge with a healthy battery (both Promaster and Leica original perform identically):

If you’re getting significantly fewer shots than this, your battery may be worn out. A fresh Promaster restores original performance.

Promaster #90091 – Why It’s a Smart, Reliable Choice

Promaster has been making camera accessories for decades. They’re not a fly‑by‑night generic brand. Here’s why photographers trust them:

• Decades of reputation – Known for quality third‑party batteries, flashes, and power solutions.

• Full safety certifications – Built with protection circuits that meet or exceed OEM standards.

• Accurate capacity – No inflated mAh claims; you get what you pay for.

• Great value – Typically 40–60% less than Leica’s original, with no compromise in real‑world performance.

For photographers who want to save money without risking their gear, Promaster is the go‑to alternative.

How to Identify a Reliable Third‑Party BP‑SCL6 Battery

Based on feedback from Leica user groups and camera repair shops, here are four things to look for when buying a non‑OEM battery:

1. Trusted Brand Name
   Stick with known third‑party brands like Promaster, Wasabi, Watson, or Patona. Avoid alphabet‑soup brands (“HQRP,” “DSLRKIT,” “Fotodiox” – some are fine, but quality varies widely).

2. Exact Compatibility Listing
   The battery must clearly state BP‑SCL6 and list Leica Q2, Q3, SL2, SL2‑S, SL3, SL3‑S. If it says “fits Leica” but doesn’t specify models, be cautious.

3. Safety Certifications
   Look for CE, RoHS, UN38.3 (transportation safety) marks. These indicate the battery has passed basic safety tests.

4. Warranty & Return Policy
   A reputable seller offers at least a 12‑month warranty. Avoid sellers who don’t stand behind their product.

What Does a Promaster BP‑SCL6 Battery Cost?

Pricing varies by retailer, but here’s a typical comparison:

The Promaster is the sweet spot: you’re not gambling on a no‑name generic, but you’re also not paying Leica’s luxury markup.

Frequently Asked Questions

Q: Will the Promaster battery show the correct remaining charge in my Leica camera?

Yes. The Promaster BP‑SCL6 is designed with the correct communication chip, so your camera will display the battery level accurately – just like the Leica original.

Q: Can I use the Promaster battery with the Leica original charger?

Yes. It’s fully compatible with the Leica BC‑SCL6 charger, as well as third‑party USB chargers that accept BP‑SCL6 batteries.

Q: Is it safe to leave the Promaster battery in the camera overnight?

Yes. The battery has built‑in over‑charge protection. However, for long‑term storage (weeks or months), it’s best to remove the battery and store it at around 50–80% charge in a cool, dry place.

Q: Will the Promaster battery void my Leica warranty?

No. In most regions (including the US and EU), using a third‑party battery does not void the camera warranty unless the battery causes damage. Leica cannot refuse warranty service just because you used a non‑Leica battery.

Q: How long does the Promaster battery last in terms of charge cycles?

400–500 full cycles before capacity drops below 80%. That’s roughly 2–4 years of regular use for most photographers. After that, it’s still usable but runtime will be shorter.

Q: Can I fly with the Promaster BP‑SCL6 battery?

Yes. The capacity (~16Wh) is well under the FAA 100Wh limit for carry‑on luggage. Always keep spare batteries in carry‑on, never in checked luggage, and protect terminals from shorting (e.g., in original packaging or a battery case).

Q: Does the Promaster battery perform the same as the Leica original in cold weather?

Yes. All lithium‑ion batteries lose some performance in freezing temperatures. The Promaster uses similar quality cells, so cold‑weather performance is comparable to the Leica original. Keep spare batteries in an inside pocket to keep them warm.

Q: Why should I choose Promaster over an even cheaper generic?

Reliability and safety. Cheap generics often use low‑grade cells that may swell, fail prematurely, or cause camera errors. Promaster has a long track record and stands behind their products with a warranty. The extra $20–30 is cheap insurance for your $5,000+ camera.

Ready to Keep Shooting Without Interruptions?

Don’t let a dead battery end your creative session. This Promaster #90091 BP‑SCL6 replacement/spare battery gives you the same performance, safety, and reliability as the Leica original – at a price that makes buying a spare (or two) an easy decision.

Click ‘Add to Cart’ – and focus on the shot, not the battery gauge.