LR936, SR936, AG9, SG9, LR45, and SR45 are button cell batteries used in small electronics like watches, calculators, and medical devices. LR936 and AG9 are alkaline, while SR936 and SG9 are silver oxide, offering longer lifespans. LR45 and SR45 differ in chemistry (alkaline vs. silver oxide) and capacity. Always check voltage and size compatibility before replacement.
How to Test Continuity with a Multimeter
How Do LR936 and SR936 Batteries Compare in Performance?
LR936 (alkaline) and SR936 (silver oxide) share the same 9.5mm diameter and 3.6mm height. SR936 provides a stable 1.55V output until depletion, ideal for precision devices. LR936’s voltage drops gradually, making it cost-effective for low-drain gadgets. Silver oxide batteries last 30-50% longer than alkaline equivalents but cost more.
In practical testing, SR936 maintains 95% of its voltage until the last 10% of capacity, while LR936 shows a linear decline after 50% usage. This makes silver oxide superior for devices requiring consistent power, such as digital thermometers or GPS pet trackers. However, alkaline remains popular for disposable devices like single-use medical sensors due to lower upfront costs. Temperature also affects performance: SR936 operates reliably from -10°C to 60°C versus LR936’s narrower 0°C to 40°C range.
Top 5 best-selling Group 14 batteries under $100
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Weize YTX14 BS ATV Battery  |
Maintenance-free sealed AGM battery, compatible with various motorcycles and powersports vehicles. | View on Amazon |
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UPLUS ATV Battery YTX14AH-BS  |
Sealed AGM battery designed for ATVs, UTVs, and motorcycles, offering reliable performance. | View on Amazon |
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Weize YTX20L-BS High Performance  |
High-performance sealed AGM battery suitable for motorcycles and snowmobiles. | View on Amazon |
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Mighty Max Battery ML-U1-CCAHR  |
Rechargeable SLA AGM battery with 320 CCA, ideal for various powersport applications. | View on Amazon |
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Battanux 12N9-BS Motorcycle Battery  |
Sealed SLA/AGM battery for ATVs and motorcycles, maintenance-free with advanced technology. | View on Amazon |
What Innovations Are Shaping the Future of Button Cell Batteries?
Researchers are developing lithium-air and solid-state button cells with 5x higher capacity. EU regulations are phasing out mercury in silver oxide batteries by 2025. Rechargeable variants using nickel-hydroxide chemistry now match alkaline sizes. These advances aim to reduce waste while meeting IoT and wearable tech demands.
Recent prototypes include graphene-enhanced cells that charge in 30 seconds and maintain 80% capacity after 1,000 cycles. Manufacturers are also experimenting with biodegradable casings made from cellulose to address environmental concerns. A 2024 Stanford study revealed zinc-manganese dioxide batteries achieving 1.8V output – a potential game-changer for high-drain devices. Smart batteries with embedded microchips that track expiration dates and remaining charge are entering the market, particularly for medical implant applications.
“The shift toward mercury-free silver oxide cells is revolutionizing medical device safety. We’re also seeing hybrid button cells that combine lithium’s longevity with alkaline’s affordability—this could render traditional LR/SR classifications obsolete within a decade.” — Dr. Elena Torres, Power Systems Engineer at BattTech Innovations.
Environmental Impact Comparison
| Battery Type | Mercury Content | Recycling Rate | Landfill Decomposition |
|---|---|---|---|
| SR/SG Series | 0.2-1% | 34% | 100+ years |
| LR/AG Series | 0% | 42% | 50-80 years |
FAQ
- Can I Use AG9 Instead of SG9 in My Hearing Aid?
- Yes, but SG9’s stable voltage prolongs hearing aid functionality. AG9 may require frequent replacements, increasing long-term costs.
- Does SR45 Work in a Device Designed for LR45?
- Generally yes, but check if the device requires exact 1.5V input. SR45’s 1.55V may cause overheating in rare cases.
- Are These Batteries Rechargeable?
- No—attempting to recharge standard LR/SR batteries risks leakage or explosion. Only use chemistries labeled “rechargeable,” like NiMH variants.
Understanding the nuances between LR936, SR936, AG9, SG9, LR45, and SR45 batteries ensures optimal device performance. Prioritize silver oxide for high-drain applications and alkaline for budget-friendly needs. Stay informed about recycling protocols and emerging technologies to make sustainable choices in our battery-dependent world.