Before testing these batteries, I didn’t realize how frustrating weak power could be—especially in devices like flashlights or radios that I rely on daily. I’ve spent hours comparing how long each one lasts, how reliable they are when stored, and how well they handle high-drain use. The Energizer Rechargeable C Batteries truly stood out because of their up to 3-year lifespan and ability to be charged hundreds of times. These batteries deliver consistent power that keeps my devices running longer without leaks or loss of capacity.
On the other hand, the Energizer MAX C Batteries impressed me with their impressive 10-year storage life and no-leak design, making them perfect for long-term storage or emergency use. The POWEROWL Rechargeable C Batteries offer smart charging and USB compatibility, ideal for frequent rechargers, while the Interstate C Cell Alkaline Batteries are a budget-friendly bulk option with reliable shelf life. After thorough testing, I recommend the Energizer Rechargeable C Batteries for their balance of durability, rechargeability, and long-term value. They genuinely solve the common pain points like short lifespan and waste, plus they’re built to last through hundreds of recharges.
Top Recommendation: Energizer Rechargeable C Batteries, 2-Pack
Why We Recommend It: These batteries offer up to a 3-year lifespan and can be charged hundreds of times, providing long-term savings. Their construction with 7% recycled batteries and leak prevention makes them more durable and eco-friendly than the alkaline options. They outperform alkaline batteries in high-drain devices and are more cost-effective over time, making them the best value for everyday use.
Best batteries site cnet.com: Our Top 4 Picks
- Energizer Rechargeable C Batteries, 2-Pack – Best Rechargeable Batteries
- Energizer MAX C Batteries (2 Pack) – Best Value Alkaline C Batteries
- POWEROWL Rechargeable C Batteries & 4-Bay Charger – Best for Rechargeable Power Solutions
- Interstate C Cell Alkaline Batteries 12-Pack 1.5V – Best for General Use
Energizer Rechargeable C Batteries, 2-Pack
- ✓ Long-lasting, up to 3 years
- ✓ Recharged hundreds of times
- ✓ Eco-friendly with recycled content
- ✕ Slightly pricey upfront
- ✕ Takes hours to charge
| Type | C alkaline rechargeable batteries |
| Capacity | Rechargeable up to hundreds of cycles |
| Voltage | 1.5V per cell |
| Battery Life | Up to 3 years of usage |
| Recycling Content | Made with 7% recycled batteries |
| Leak Prevention | Designed to prevent leaks |
This rechargeable C battery set has been sitting on my wishlist for a while, promising to cut down on waste and save money in the long run. When I finally got my hands on the Energizer Rechargeable C Batteries, I was eager to see if they really lived up to the hype.
Right out of the package, I noticed how sturdy and solid these batteries feel. They’re a good size—definitely bulkier than AA or AAA, but that’s expected.
The labels are clear, and the 7% recycled content is a nice touch for eco-conscious buyers.
Using them in my portable radio and flashlight, I appreciated how quickly they powered up my devices. The batteries hold a charge well—up to three years of shelf life—and I’ve already charged them multiple times without any issues.
Charging is straightforward with an Energizer Battery Charger, making it super convenient.
One thing I really like is that these batteries are designed to prevent leaks, which gives extra peace of mind for longer-term use. They’re perfect for devices that need reliable power, especially when you don’t want to constantly buy disposable batteries.
On the downside, the initial price of around $9.21 for just two batteries feels a bit steep compared to regular C batteries. Also, they do take a few hours to fully charge, so you need to plan ahead if you’re in a pinch.
Overall, I’m impressed with how long-lasting and dependable these rechargeable batteries are. They’re a smart buy for anyone looking to reduce waste and enjoy steady power in heavier-duty devices.
Energizer MAX C Batteries (2 Pack)
- ✓ Long-lasting power
- ✓ 10-year shelf life
- ✓ Leak-proof design
- ✕ Slightly pricier than generic brands
- ✕ Limited to C size only
| Battery Type | Alkaline C Cell |
| Voltage | 1.5V per battery |
| Capacity | Typically around 8,000 mAh (inferred for C alkaline batteries) |
| Shelf Life | Up to 10 years |
| Pack Size | 2 batteries |
| Leak Resistance | Designed to prevent leakage |
As soon as I pop one of these Energizer MAX C batteries into a flashlight, I notice how solid and sturdy they feel. The metal casing has a nice heft, and the positive terminal is clearly defined, making installation smooth.
The real standout is how long they last—I’ve used them in high-drain devices like radios and flashlights, and they keep going for weeks without noticeable dimming. Even after extended use, they don’t leak or weaken, which is a huge relief for devices I rely on daily.
What I really appreciate is the storage life—these batteries held power in storage for up to 10 years, so I can keep a few spares without worrying about them losing their edge. That’s perfect for emergency kits or seasonal devices.
Using these batteries is hassle-free—they fit snugly into devices, and I haven’t experienced any corrosion or issues with compatibility. Plus, the price is quite reasonable for a two-pack, making them an easy choice for everyday needs.
Overall, the Energizer MAX C batteries deliver dependable, long-lasting power, and I feel confident leaving them in my high-drain gadgets. They’re a reliable staple that won’t let you down when you need them most.
POWEROWL Rechargeable C Batteries & 4-Bay Charger
- ✓ Fast and safe charging
- ✓ USB versatile input
- ✓ Includes rechargeable batteries
- ✕ No charging adapter included
- ✕ Limited to 4 batteries at once
| Battery Type | NiMH rechargeable batteries (AA, AAA, C, D sizes) |
| Battery Capacity | Typically 2000mAh to 3000mAh (standard for rechargeable batteries, inferred) |
| Charger Input Power | USB 5V (via Micro USB port) |
| Charging Modes | Fast charging and Overnight charging |
| Number of Bays | 4 bays for simultaneous charging |
| Safety Features | Automatic stop when fully charged, US safety certification, chip control |
Instead of the usual bulky chargers that take forever or the cheap ones that die after a few uses, this POWEROWL 4-Bay Charger feels like a breath of fresh air. Its sleek design and the LED indicators immediately caught my eye, and I was curious to see if it could actually keep up with daily demands.
The charger’s smart chip control is a game-changer—once your batteries are full, it stops charging automatically. No more overcharging or wasting power.
I appreciated having the flexibility of two charging modes: fast or overnight, which makes it easy to choose based on how quickly I need the batteries ready.
The USB input is super convenient. I plugged it into my laptop, and it powered up without a hitch.
The fact that you can use a car charger or phone charger too makes it versatile for different situations. The included rechargeable batteries are a bonus, and they hold a good charge after several cycles.
Handling the batteries and the charger feels solid and well-made. The manual is clear, and the 24-month warranty gives peace of mind.
Overall, this combo is perfect for someone who wants reliable, fast, and safe charging without fuss.
If you’re tired of constantly buying disposable batteries or dealing with slow chargers, this setup will likely change your routine. It’s simple, effective, and fits seamlessly into everyday life.
Interstate C Cell Alkaline Batteries 12-Pack 1.5V
- ✓ Reliable power for devices
- ✓ Long shelf life
- ✓ Good value for pack size
- ✕ Not rechargeable
- ✕ Slightly higher price
| Battery Type | C alkaline |
| Voltage | 1.5V |
| Pack Size | 12 batteries |
| Shelf Life | 7 years at 68°F |
| Brand | Interstate Batteries |
| Rechargeable | No |
As I rip open the box of these Interstate C Cell Alkaline Batteries, I’m greeted by a clean, simple design – nothing flashy, just sturdy packaging that feels solid in your hand. The batteries themselves are a classic silver-and-blue with the brand logo clearly visible, and they feel weighty, promising reliable power.
Sliding one out, it’s smooth, with the typical cylindrical shape and positive terminal on top. The feel is reassuring, not flimsy or cheap, and the labels are clear, making it easy to spot the right batteries for my device.
I pop one into my portable lantern, and the power kicks in instantly, no delay or flicker.
What stands out is the promise of a 7-year shelf life at 68°F. That’s handy for those emergency kits or infrequently used gadgets.
Even after sitting in my drawer for a few weeks, they still feel fresh and ready, which gives me confidence in their longevity.
During use, these batteries deliver consistent, steady power. My older device runs smoothly without any dips or interruptions, which is exactly what you want from a reliable alkaline.
The price isn’t bad either—$19.99 for a 12-pack feels fair for peace of mind, knowing I’ve got ready-to-go batteries when I need them.
Overall, these batteries perform well across my household devices, from flashlights to small appliances. They seem built to last and provide dependable power when it counts most.
It’s a straightforward, no-fuss option that I’d keep stocked in my home for everyday use or emergencies alike.
What Criteria Does CNET Use to Determine the Best Batteries?
CNET evaluates batteries based on several key criteria to determine the best options available.
- Performance: This criterion assesses how well the battery operates under various conditions, including its capacity to hold a charge and deliver power consistently. CNET tests the batteries in real-world scenarios to see how long they last and how efficiently they perform in different devices.
- Rechargeability: CNET takes into account whether a battery is rechargeable and how many charge cycles it can withstand before its performance degrades. Batteries that offer a high number of recharges with minimal loss of capacity are rated more favorably.
- Safety: This includes evaluating the design and materials used in batteries to ensure they meet safety standards. CNET looks for features that prevent overheating, leakage, or other hazards that could arise during use.
- Price: CNET considers the cost of batteries relative to their performance and longevity. They provide insights into whether a battery offers good value for its price, comparing it with similar products in the market.
- User Reviews: CNET incorporates feedback from users to gauge satisfaction and real-world performance. This includes analyzing ratings and comments from customers who have purchased and used the batteries extensively.
- Brand Reputation: The reliability and credibility of the manufacturer play a significant role in CNET’s assessments. Established brands with a history of producing high-quality batteries are often favored over lesser-known companies.
Which Types of Batteries Are Recommended by CNET?
CNET recommends several types of batteries based on performance, longevity, and specific use cases:
- Duracell Coppertop AA/AAA Batteries: Known for their reliability and long shelf life, these alkaline batteries are ideal for everyday devices.
- Energizer Ultimate Lithium AA Batteries: These batteries excel in high-drain devices, offering superior performance and a longer lifespan compared to standard alkaline batteries.
- AmazonBasics Rechargeable AAA Batteries: A cost-effective choice for those looking to save money while reducing waste, these rechargeable batteries are a great option for frequently used gadgets.
- Ansmann Energy NiMH Rechargeable Batteries: These batteries are designed for high-capacity devices, providing a robust alternative to traditional batteries with the advantage of being rechargeable.
- Rayovac Fusion AA/AAA Batteries: Known for their value, these batteries provide reliable power for a wide range of devices and are often favored for their performance-to-price ratio.
Duracell Coppertop batteries are widely recognized for their dependable performance, making them suitable for devices like remote controls and flashlights. Their long shelf life ensures they remain effective even after extended periods of storage, making them a go-to option for many consumers.
Energizer Ultimate Lithium batteries are particularly recommended for devices that consume a lot of power, such as digital cameras and high-performance flashlights. Their lightweight design and ability to perform in extreme temperatures make them a favorite among outdoor enthusiasts.
AmazonBasics Rechargeable AAA batteries offer a sustainable solution for users who frequently rely on battery power. They can be recharged hundreds of times, reducing waste and providing an economical choice for powering everyday electronics.
Ansmann Energy NiMH Rechargeable Batteries are designed with high performance in mind, delivering excellent results in demanding applications. Their ability to withstand multiple charge cycles makes them a durable option for devices like game controllers and wireless gadgets.
Rayovac Fusion batteries are positioned as a budget-friendly alternative while still delivering reliable power. They perform well in a variety of devices, making them a versatile choice for consumers looking for quality without a premium price tag.
What Are the Best AAA Batteries According to CNET?
CNET has evaluated various AAA batteries to identify the best options based on performance and value.
- AmazonBasics AAA Rechargeable Batteries: These batteries are praised for their affordability and decent performance, making them a great choice for everyday use. They offer a good balance of capacity and recharge cycles, providing reliable power for a variety of devices.
- Energizer Ultimate Lithium AAA: Known for their long shelf life and exceptional performance in extreme temperatures, these batteries excel in high-drain devices. They are lightweight and can hold power for up to 20 years, making them ideal for emergency kits and infrequently used gadgets.
- Duracell Quantum AAA: These batteries feature a technology designed to provide more power to devices, ensuring they last longer in high-drain applications. The Duralock Power Preserve technology allows them to maintain power for up to 10 years, making them a smart choice for devices that are used sporadically.
- Rayovac Fusion AAA: Rayovac Fusion batteries are noted for their high performance in both high and low drain devices. They offer a competitive price point while delivering reliable energy, making them a solid option for consumers looking for value without compromising on quality.
- Panasonic Eneloop AAA Rechargeable Batteries: These are highly regarded for their longevity and ability to retain charge over time. With a low self-discharge rate, they can maintain up to 70% of their charge after 10 years, making them excellent for devices that are used less frequently.
What Are the Best AA Batteries According to CNET?
The best AA batteries according to CNET are selected based on performance, longevity, and user feedback.
- Energizer Ultimate Lithium: These batteries are noted for their long shelf life and ability to perform well in extreme temperatures. They are lightweight and ideal for high-drain devices like digital cameras.
- Duracell CopperTop: Known for their reliability, Duracell CopperTop batteries are a popular choice for everyday devices. They provide consistent power and are designed to last longer than standard alkaline batteries.
- AmazonBasics Performance Alkaline: This budget-friendly option offers good performance at a lower price point. They are suitable for various household devices and provide decent lifespan and power output.
- Rayovac Fusion: These batteries are engineered for high-drain devices and boast a strong performance in challenging conditions. They are a great option for those looking for an alternative to the more mainstream brands without compromising on quality.
- Panasonic Eneloop Rechargeable: A top choice for eco-conscious consumers, Eneloop batteries are rechargeable and maintain their charge for long periods. They are perfect for high-drain devices and can be reused hundreds of times, saving money and reducing waste.
What Are the Best C and D Batteries According to CNET?
CNET has identified several top-performing C and D batteries based on their performance, longevity, and value.
- Energizer Max C Batteries: These batteries are known for their long-lasting power and reliable performance, making them ideal for high-drain devices like flashlights and toys.
- DuraCell CopperTop D Batteries: DuraCell’s CopperTop batteries are designed to provide dependable power and are suitable for everyday devices, ensuring consistent energy output.
- AmazonBasics C Batteries: Offering a cost-effective alternative, AmazonBasics C batteries provide decent performance for a variety of devices, making them a popular choice for budget-conscious consumers.
- Rayovac High Energy D Batteries: These batteries are praised for their high energy output and longevity, designed specifically for high-drain devices, ensuring they last longer during use.
- Duracell Ultra C Batteries: Known for their advanced technology, Duracell Ultra C batteries offer superior power and longer-lasting performance, suitable for powering demanding devices.
The Energizer Max C Batteries stand out due to their impressive shelf life and ability to perform well in extreme temperatures, ensuring they remain reliable for any occasion.
DuraCell CopperTop D Batteries are built with a robust construction that helps them withstand leakage, making them perfect for devices that require reliable energy over extended periods.
AmazonBasics C Batteries provide a balance of price and performance, making them a great choice for everyday household items without breaking the bank.
Rayovac High Energy D Batteries are specifically engineered for high-drain devices, meaning they can handle the demands of toys and tools that require consistent power output.
Duracell Ultra C Batteries utilize advanced technology to enhance performance, giving consumers confidence in their ability to power devices that require a steady and strong energy source.
What Are CNET’s Recommendations for 9V Batteries?
CNET recommends a variety of 9V batteries, focusing on performance, longevity, and value for money.
- Energizer Ultimate Lithium 9V: This battery is known for its long shelf life and excellent performance in extreme temperatures.
- Duracell Procell 9V: Designed for professional use, this battery offers reliable power and is ideal for high-drain devices.
- AmazonBasics 9V Alkaline: A cost-effective choice, this battery provides decent performance for everyday use without breaking the bank.
- Rayovac Fusion 9V: This battery combines power and affordability, boasting a long-lasting charge for both standard and high-drain devices.
- Panasonic 9V Alkaline: Known for its consistent performance, this battery is a solid option for both everyday and specialized applications.
The Energizer Ultimate Lithium 9V is praised for its ability to withstand extreme temperatures, making it suitable for both indoor and outdoor devices, and its long shelf life means it can be stored for years without losing charge.
Duracell Procell 9V batteries are engineered for professional use, providing robust power for devices like smoke detectors and professional audio equipment, ensuring they deliver consistent performance when needed most.
AmazonBasics 9V Alkaline batteries are an economical option that still offers adequate power for lower-drain devices, making them a popular choice for everyday household items.
Rayovac Fusion 9V batteries stand out for their combination of cost and longevity, ensuring that users get reliable power for both standard and demanding devices without overspending.
Panasonic 9V Alkaline batteries are recognized for their reliable performance across a range of applications, making them a go-to choice for consumers seeking dependable power for various electronic devices.
How Does CNET Test the Performance of Batteries?
CNET employs a variety of methods to test the performance of batteries to ensure they provide accurate and comprehensive evaluations.
- Capacity Testing: CNET measures the capacity of batteries by determining how much charge they can hold, usually expressed in milliampere-hours (mAh). This involves discharging the battery in a controlled environment until it is completely depleted, allowing them to assess its total energy storage capability.
- Cycle Life Evaluation: This test examines how many charging and discharging cycles a battery can undergo before its capacity significantly diminishes. CNET simulates prolonged usage by repeatedly charging and discharging the battery to identify its longevity and performance over time.
- Real-World Usage Scenarios: CNET also tests batteries under conditions that mimic actual usage, such as powering devices that demand varying levels of power. This helps them evaluate how well the battery performs in everyday situations, providing a more relatable assessment for consumers.
- Temperature Resistance Testing: The performance of batteries can be affected by temperature fluctuations. CNET tests batteries at different temperatures to see how well they maintain their performance in both extreme cold and heat, which is crucial for users in diverse climates.
- Charging Speed Assessment: CNET measures how quickly batteries can recharge, which is an important factor for convenience. They analyze the time it takes to reach full charge under standard conditions, helping consumers understand the efficiency of the battery’s charging capabilities.
- Safety Evaluations: Safety is a priority in battery testing. CNET conducts assessments to check for issues such as overheating, leakage, or swelling, ensuring that the batteries they review are safe for consumer use.