A 6V lithium battery quietly runs a lot of gear in your life. It powers the strobe in a vintage film camera, the receiver on a wireless dog fence, and the backup cell behind a smoke detector. Picking the wrong cell means a dead shutter at the wrong moment or a dog collar that gives up mid-walk. These ten options cover the most common household and specialty uses, so you can match chemistry, capacity, and form factor to what you actually own.
The Choices Worth Comparing
Mihobatt 5-Pack 2CR5 6V 1650mAh Lithium Replacement
TQTHL 5-Pack 2CR5 6V Lithium Photo Battery
Mihobatt 5-Pack CR-P2 6V 1650mAh Lithium Battery
PetSafe RFA-67 6V Replacement Battery 6-Pack
Duracell DL223ABPK 223 6V Lithium Battery
PetSafe RFA-67 6V Replacement Battery 5-Pack
hflexgrad 10-Pack 6V 1500mAh CR-P2 Lithium Battery
TQTHL 10-Pack CR-P2 6V 2000mAh Lithium Battery
Enjoybot 36V 100Ah LiFePO4 Lithium Battery
Mihobatt 10-Pack CR-P2 6V 1650mAh Lithium Battery
More On The Choices That Made The List
The Mihobatt 2CR5 pack shows up most often in the bag of someone who still shoots film. The 2CR5 form factor (a flat, roughly rectangular lithium cell) drops into older 35mm bodies and some dedicated flash units, so anyone pulling a Canon EOS 1V, a Contax, or a Nikon F100 out of storage needs these on hand.
At 1650mAh, the cells promise enough punch for a long weekend of shooting, though cold weather can shave usable capacity. Owners running a single camera body get five spares, which covers a full vacation plus a buffer. Where the photo cell market usually punishes you for buying the wrong cross-reference, this one names 2CR5M, 5032LC, DL245, EL2CR5, KL2CR5, and RL2CR5 as direct swaps.
Practical Advantages
- Five-cell pack stretches across multi-day trips without a charger
- Wide cross-reference list covers common legacy camera models
- Low self-discharge supports long shelf life in a camera bag drawer
- Single-use lithium design avoids charging equipment in the field
Things To Consider
- Not rechargeable, so heavy shooters will burn through the pack
- Cold outdoor shoots may reduce usable shots per cell
Quick Facts
Who It Suits Best
Film photographers keeping an older SLR or compact alive with a working flash.
Look Elsewhere When
The PetSafe RFA-67 6-Pack suits pet owners running fence collars far better than any photo cell.
The TQTHL 2CR5 pack leans hard into Canon compatibility. Owners of EOS Rebel bodies, plus the older 5, 50, 55, 650, and 10QD series, are the target audience. That broad film-era coverage matters because mismatched cross-references are the most common reason a camera refuses to fire.
Comparing it to the earlier Mihobatt pack, this one is less about capacity and more about the printed compatibility list. The lithium chemistry (Li-ion) keeps weight low in your camera bag. You trade rechargeability for grab-and-go convenience, so plan to rotate through the pack rather than top it off.
What Pays Off
- Long compatibility list for Canon film and early DSLR bodies
- Five cells share the cost-per-cell burden of premium photo batteries
- Direct cross-reference for 2CR5M, DL245, and EL2CR5 codes
Trade Offs
- Capacity rating is less prominent in the marketing than cross-reference claims
- Non-rechargeable format means frequent travelers may restock often
- No explicit temperature range provided for winter shooting
Made For
Vintage Canon film shooters who want a confirmed fit across multiple body models.
Consider Something Else When
The Mihobatt 5-Pack 2CR5 makes more sense if you prioritize capacity figures and shelf life over a model-specific compatibility list.
The CR-P2 form factor shows up in smoke alarms, motion sensors, and a long list of compact cameras. Mihobatt’s 5-Pack turns this often-overlooked cell into a stocking item for the household drawer. At 6V and 1650mAh (9.9Wh), the energy matches what the original equipment expects.
The cell dimensions, around 35 by 34 by 19mm, line up with the standard CR-P2 footprint, so it seats cleanly in tight battery compartments. Compared to the larger 36V Enjoybot further down this list, this one is built for low-drain, long-life roles rather than continuous high current.
The Value In It
- Five cells cover multiple detectors around the home
- 1650mAh capacity suits both photo flashes and alarm backup roles
- Compact 38g weight keeps gear balanced in handheld devices
Room For Improvement
- Single-use design adds landfill cost in multi-device homes
- Low-drain devices only, not suited to motorized or high-current loads
Best Suited To
Homeowners standardizing on one backup cell across smoke alarms and similar detectors.
A Better Fit Elsewhere
The TQTHL 10-Pack CR-P2 at 2000mAh fits power users running strobes and flash units more generously.
The PetSafe RFA-67 is the cell that keeps wireless fence systems and bark collars honest. Six cells in one pack suits multi-dog households, or anyone who has learned the hard way that collars always die at 11pm. The lithium metal chemistry (a non-rechargeable lithium formulation built for steady low-current draw) tolerates the outdoor life better than alkaline alternatives.
Rated lifespan lands at one to three months per cell depending on collar activity. The waterproof claim matters because dogs swim, roll in dew, and crash through wet brush without asking permission. Compared to the photo-focused Mihobatt packs above, this one trades camera cross-references for verified fit inside PetSafe receiver collars.
Real-World Strengths
- Six-cell count covers multiple collars or several months of swaps
- Waterproof rating handles outdoor dog runs and rainy walks
- Verified fit across PetSafe in-ground and wireless fence receivers
Worth Noting
- One to three month lifespan means planning annual replacement cycles
- PetSafe-only fit, so this won’t serve a generic fence receiver
Quick Facts
Who Will Love This
Multi-dog owners running PetSafe fence systems who want one shopping trip per year.
Skip It When
The PetSafe RFA-67 5-Pack fits a single-collar household without the surplus stockpile.
The Duracell 223 (also sold as DL223A or EL223AP) is the single-cell option for shoppers who only need one battery and want a recognizable name behind it. The operating temperature range, spanning roughly -40F to 140F, is the headline feature. Outdoor motion sensors, garage door openers, and car alarm remotes all live in harsh temperature swings, and this cell keeps working through them.
Sold as a single cell at 6V, this is the “one battery, one job” pick. Compared to the bulk Mihobatt CR-P2 packs earlier, you trade quantity for the wide thermal tolerance and the Duracell name on the wrapper. The package footprint is small (about 2 by 9 by 9cm) and weighs around 1.6 ounces.
Positive Takeaways
- Extreme temperature tolerance suits outdoor and garage installs
- Single-cell format avoids waste in devices that need just one
- Recognizable brand with a long track record in lithium cells
Small Caveats
- Single-cell cost runs higher per unit than multi-packs
- Not rechargeable, so high-use devices burn through it fast
Perfect Match For
Owners of one garage sensor or a single car remote who need reliable cold-weather starting.
Swap It Out When
The Mihobatt 5-Pack CR-P2 suits households standardizing replacements across multiple detectors.
The 5-Pack version of the PetSafe RFA-67 is the right-sized refill for a one-dog household. Where the 6-Pack rewards multi-collar households, this version lines up with the practical reality of replacing one cell every couple of months. You still get the lithium metal chemistry and outdoor durability.
Comparing the two PetSafe packs on this list, the math is simple: one collar plus a couple of spares equals five cells, which leaves the household ready for most of a year. If your dog tests fences with a vengeance, the 6-Pack keeps the safety margin.
Noteworthy Benefits
- Five-cell count matches a typical year’s worth of swaps
- Waterproof rating holds up to dog swims and rainy walks
- Direct fit for PetSafe bark collars and receiver collars
Points To Keep In Mind
- One to three month per-cell life means no skipping replacement cycles
- Specific to PetSafe systems, won’t cross into other brands
The Right Fit
Single-dog households running PetSafe fence or bark collar systems.
Reach For A Different Pick When
The PetSafe RFA-67 6-Pack better serves a multi-dog home where every collar needs its own cycle.
The hflexgrad 10-Pack targets the household that has quietly accumulated a dozen battery-powered devices. Smoke detectors, motion sensors, door contacts, and a few older cameras all draw from the CR-P2 well. Ten cells in one box means a decade of replacements in many low-drain installs.
The PTC protection (a built-in positive temperature coefficient safety switch that cuts current during abnormal heating) is the headline engineering detail, paired with a 75% capacity retention claim after long storage. Compared to the 5-Pack Mihobatt earlier, you trade a slightly lower 1500mAh rating for a deeper stockpile.
Advantages To Know
- Ten-cell bulk suits homes with many detectors and sensors
- PTC thermal protection reduces overheating risk in enclosed devices
- Wide operating temperature range covers attic and basement installs
Honest Caveats
- 1500mAh rating runs lower than the 1650mAh and 2000mAh alternatives
- Bulk packaging only makes sense if you actually use that many cells
Quick Facts
Built With In Mind
Homeowners running multiple low-drain CR-P2 devices across rooms and outbuildings.
Where A Sibling Pick Shines
The TQTHL 10-Pack at 2000mAh fits owners of higher-drain photo equipment better than low-current alarms.
The TQTHL 2000mAh pack is the highest-capacity CR-P2 option in this roundup. Strobe-heavy photographers who burn through cells faster than they would like get the extra headroom. The 2000mAh rating pushes beyond the 1650mAh baseline used elsewhere on this list, so each cell lasts longer under continuous flash use.
Cross-references include 223A, DL223A, EL223AP, and 2CR-P2, covering the common labeling you find on Canon, Nikon, and Olympus flashes. Cell dimensions match the standard 35.4 by 34.4 by 19mm CR-P2 footprint. Compare that to the hflexgrad 10-Pack: same cell count, but more stored energy per unit.
Strengths Worth Knowing
- 2000mAh capacity outlasts standard 1650mAh CR-P2 cells
- Ten-cell bulk keeps a working studio in continuous rotation
- Standard form factor fits all common CR-P2 photo devices
Practical Considerations
- Higher per-cell capacity may carry a slightly higher unit cost
- Non-rechargeable, so flash-heavy shooters restock regularly
Whose Shelf It Belongs On
Studio photographers and event shooters running CR-P2 flashes at high cycle rates.
Not Your Match When
The hflexgrad 10-Pack is a smarter pick if your CR-P2 use is mostly low-drain alarm backup.
The Enjoybot 36V 100Ah is the heavyweight of this roundup, and the only deep-cycle LiFePO4 (lithium iron phosphate) option in the lineup. Where the cells above handle milliamps, this one delivers 100 amp-hours of usable capacity for golf carts, trolling motors, RV house banks, and off-grid solar storage.
The built-in 100A BMS (battery management system, an electronic circuit that protects against overcharge, overdischarge, and short circuits) covers six protection modes including low-temperature cutoff. Bluetooth monitoring lets you check state of charge from a phone. The 500A peak current handles motor startup surges that smaller lithium banks cannot. Compared to the household CR-P2 packs above, this is an entirely different category of purchase.
Features That Help
- 100A BMS with low-temp cutoff protects the cell in cold weather
- Bluetooth monitoring removes guesswork in remote installs
- 500A peak current supports motor startup in carts and trolling motors
- Deep-cycle LiFePO4 chemistry rated for thousands of cycles
Factors To Consider
- Heavy and bulky compared to household coin and photo cells
- Requires a charger and wiring matched to 36V LiFePO4 specs
- Single-cell format means no multi-pack savings
Quick Facts
Right Fit For
Boaters, RVers, and golf cart owners upgrading from lead-acid to lithium deep-cycle power.
Where Another Pick Suits Better
Any of the CR-P2 or 2CR5 packs above suit homeowners needing small household cells, not deep-cycle banks.
The 10-Pack version of Mihobatt’s CR-P2 line is the long-storage pick. The cells carry a 10-year shelf rating, which makes them a natural fit for emergency kits, vacation cabins, and any drawer you want to stock and forget until you need it.
Cell weight lands at 38g per unit, with the same 35.42 by 34.40 by 18.54mm dimensions as the 5-Pack earlier. Owners commonly report the cells holding charge across multiple seasons in storage. Compare that to the hflexgrad 10-Pack: similar count, but Mihobatt emphasizes storage stability over PTC thermal protection.
Useful Strengths
- 10-year shelf rating supports true emergency kit storage
- Ten-cell bulk matches multi-device households on a budget
- Standard 1650mAh capacity lines up with most CR-P2 devices
Less Ideal Details
- Lower per-cell capacity than the 2000mAh TQTHL alternative
- Non-rechargeable, so high-cycle use burns through the pack
Who Should Grab It
Preppers, cabin owners, and anyone stocking a 10-year backup supply of CR-P2 cells.
A Better Fit Elsewhere
The TQTHL 10-Pack CR-P2 at 2000mAh suits active photographers who value capacity over shelf life.
What To Weigh Before Choosing 6v Lithium Battery
Match The Form Factor To The Device
The single biggest mistake shoppers make is grabbing a 6V cell with the wrong physical shape. 2CR5, CR-P2, 223, and RFA-67 all deliver 6V, but they are not interchangeable. Pull the old battery, read the printed code, and match it before anything else.
Capacity Only Matters With Context
A 2000mAh CR-P2 outlasts a 1500mAh cell in the same device, but capacity numbers get fuzzy across chemistry types. Lithium metal, Li-ion, and LiFePO4 rate capacity differently, so compare apples to apples within one chemistry family.
Temperature Tolerance Drives Outdoor Use
Garage sensors, fence collars, and outbuilding alarms live through real winters. A wide operating range, like the Duracell 223’s roughly -40F to 140F, makes the difference between a battery that works in February and one that does not.
Deep-Cycle Belongs In Its Own Category
The Enjoybot 36V 100Ah pack is not interchangeable with the household cells above. Deep-cycle LiFePO4 is a separate purchase decision with different wiring, charging, and safety considerations.
Key Considerations Across These Picks
Common Shopping Slip Ups
Treating “6V lithium” as one category leads to wrong-form-factor purchases. Confirm the printed code on the device before clicking. Pet owners should verify the collar brand, since RFA-67 fits PetSafe but not every wireless fence. Deep-cycle shoppers should confirm voltage and BMS requirements before picking a LiFePO4 bank.
When Paying More Pays Off
Higher-tier pricing in this category usually buys extra capacity, longer shelf life, or added protection circuitry. The TQTHL 2000mAh pack costs more than 1500mAh alternatives but pays off in cycle life. The Enjoybot LiFePO4 costs more than any household cell but replaces a battery room full of lead-acid in a golf cart or RV.
Frequently Asked Questions
What Is The Difference Between 2CR5 And CR-P2?
Both deliver 6V, but they are different shapes. 2CR5 is a flat rectangular cell common in film cameras. CR-P2 is a slightly different flat footprint used in some flashes, detectors, and select cameras.
Can I Recharge Any 6V Lithium Battery?
No. Most household 6V lithium cells in this list, including the 2CR5, CR-P2, 223, and RFA-67 packs, are single-use. The Enjoybot 36V 100Ah LiFePO4 is rechargeable, but it requires a charger matched to its chemistry.
How Long Do PetSafe RFA-67 Batteries Last?
Owners commonly report one to three months per cell, depending on collar activity and environment. Stocking a 5 or 6-pack covers most households through the year.
Are These Batteries Safe In Cold Garages?
The Duracell 223 carries a wide operating range that handles unheated spaces. Other cells on this list do not advertise an extreme range, so expect reduced runtime in very cold installs.
What Uses A CR-P2 Battery?
CR-P2 cells power select camera flashes, smoke detectors, motion sensors, and door contact sensors. The 1650mAh and 2000mAh ratings on this list cover both photo and alarm use.
Closing Remarks
Match the cell to the device, not the other way around. Cross-reference the printed code, pick a capacity that fits your usage pattern, and grab a pack size that lines up with how often you actually swap batteries. That is the path to a quiet battery drawer and gear that works when you reach for it.