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5 Best Toto Battery Options for 2026
You want reliable 3V lithium cells that fit Toto flush valves and cut maintenance hassle, so pick from five top options: KraToz CR8-LHC 2-pack, KraToz 3-pack, a 10-pack commercial tote, URBUTY 5-pack high-density cells, and a 2-pack replacement for quick swaps. Each matches TOTO CR8-LHC plugs, offers low self-discharge, and runs −40 to 85 °C for tough sites. Check connector fit, capacity rating, and warranty before you install to avoid surprises and learn more.
| KraToz CR8-LHC Replacement 3V Lithium Batteries (2-Pack) |
| Reliable Replacement | Model: CR8.LHC (CR8-LHC) | Voltage: 3.0 V | Physical Size: 17 mm × 45 mm | VIEW LATEST PRICE | Read Our Analysis |
| 10-Pack Lithium Backup Batteries for Toto Flush Valves |
| Bulk Backup Pack | Model: CR8.LHC | Voltage: 3.0 V | Physical Size: 17 mm × 45 mm | VIEW LATEST PRICE | Read Our Analysis |
| 3V 3000mAh Lithium Backup Batteries (5-Pack) |
| High-Capacity Option | Model: CR8.LHC | Voltage: 3.0 V | Physical Size: 17 mm × 45 mm | VIEW LATEST PRICE | Read Our Analysis |
| KraToz CR8-LHC 3-Pack Lithium Batteries for TOTO |
| Multi-Pack Value | Model: CR8.LHC | Voltage: 3.0 V | Physical Size: 17 mm × 45 mm | VIEW LATEST PRICE | Read Our Analysis |
| 2-Pack Lithium Replacement Battery for Toto Flush Valves |
| Flush Valve Ready | Model: CR8.LHC | Voltage: 3.0 V | Physical Size: 17 mm × 45 mm | VIEW LATEST PRICE | Read Our Analysis |
More Details on Our Top Picks
KraToz CR8-LHC Replacement 3V Lithium Batteries (2-Pack)
In case you want a reliable, long-lasting backup for your TOTO Aqua Auto or similar devices, the KraToz CR8-LHC 3V lithium battery pack is a smart choice you can count on. You’ll like that this two pack fits TOTO references like TH559EDV410R and CR17450, and it weighs just 23 grams each. It delivers 3 volts at 2600 mAh with a steady 0.5 mA output, so your PLC backup memory, real-time clock, or machine tool stays powered. It works from minus 40 to 85 C, is disposable, non rechargeable, and comes with a black plug for easy install.
- Model:CR8.LHC (CR8-LHC)
- Voltage:3.0 V
- Physical Size:17 mm × 45 mm
- Intended Use / Compatibility:TOTO (Aqua Auto), TH559EDV410R, CR17450/57211, PLC/industrial devices
- Chemistry / Type:Non-rechargeable lithium
- Connector / Plug:With black plug
- Additional Feature:2600 mAh capacity
- Additional Feature:23 g each weight
- Additional Feature:Operating −40 to +85°C
10-Pack Lithium Backup Batteries for Toto Flush Valves
Provided that you’re keeping a commercial restroom running smoothly, especially in busy buildings where a stuck flush could cause real trouble, these 10-pack CR8.LHC lithium backup batteries are a smart choice since they give you plenty of spares and reliable power whenever you need it most. You’ll like that each cell is 3.0 V and 2600 mAh, so they last through heavy use. They fit Toto CR8-LHC TH559EDV410R and THP3053, and they replace Fuji FDK CR8.LHC 17430. The 17 mm x 45 mm size and plug connector make swaps fast. Buying ten reduces downtime and keeps fixtures working.
- Model:CR8.LHC
- Voltage:3.0 V
- Physical Size:17 mm × 45 mm
- Intended Use / Compatibility:TOTO flush valves (TH559EDV410R, THP3053), Fuji FDK replacement
- Chemistry / Type:Lithium (non-rechargeable backup)
- Connector / Plug:With plug
- Additional Feature:10-piece bulk pack
- Additional Feature:150 mA discharge current
- Additional Feature:Designed for Toto Eco EFVS
3V 3000mAh Lithium Backup Batteries (5-Pack)
You’ll find these 3V lithium backup batteries are often the best choice for anyone who needs reliable, long-lasting backup power for TOTO urinals, flush valves, and other specialized fixtures that depend on steady memory or sensor power. You get a five pack of URBUTY CR8.LHC cells that match TOTO CR8-LHC and Fuji FDK CR8.LHC. They run at 3.0 volts with high-density lithium chemistry, low self-discharge, and a rated 2600 mAh capacity though the title cites 3000 mAh. They fit original plugs, work from minus 40 to 85 C, and demand you avoid recharging and check connector fit before installing.
- Model:CR8.LHC
- Voltage:3.0 V
- Physical Size:17 mm × 45 mm
- Intended Use / Compatibility:TOTO urinals/flush valves (TH559EDV410R, THP3053), Fuji FDK replacement, industrial backup
- Chemistry / Type:Non-rechargeable lithium
- Connector / Plug:With original plug
- Additional Feature:Listed 3000mAh title claim
- Additional Feature:Wide −55 to +85°C range
- Additional Feature:Includes original connector
KraToz CR8-LHC 3-Pack Lithium Batteries for TOTO
Should you want a reliable replacement battery for TOTO automatic faucets and similar devices, choose the KraToz CR8-LHC 3-pack for steady, long-lasting power. You’ll get three 17 mm across 45 mm lithium cells rated 3 V and 2600 mAh, so your Aqua Auto or meter keeps working without fuss. These plug-style black terminals fit TOTO models and other equipment like meters, clocks, alarms, PLC backup, and FANUC systems. You’ll appreciate the sturdy capacity for machine tools and measuring instruments. Upon installing them, you’ll feel confident they’ll hold charge and resist frequent replacement, saving time and worry.
- Model:CR8.LHC
- Voltage:3.0 V
- Physical Size:17 mm × 45 mm
- Intended Use / Compatibility:TOTO Aqua Auto, TH559EDV410R/57211/CR17450, PLC backup
- Chemistry / Type:Lithium
- Connector / Plug:With black plug
- Additional Feature:Black plug included
- Additional Feature:Industrial equipment ready
- Additional Feature:Matches CR8LHC-F1ST3S code
2-Pack Lithium Replacement Battery for Toto Flush Valves
Should you maintain Toto flush valves or Eco EFVS units, this 2-pack lithium replacement battery is a smart choice that keeps your fixtures working without surprise downtime. You’ll get two CR8.LHC batteries that match Fuji FDK CR8.LHC 17430 and Toto CR8-LHC TH559EDV410R models. Each battery is 3.0 V, 2600 mAh, and 17 mm across 45 mm, with a 150 mA discharge rating. They plug in for easy swap outs and fit Eco EFVS systems, Toto flush valves, and Toto faucets. The set weighs under two ounces and ships in compact packaging. Check zoyfayl warranty details and user reviews prior to buying.
- Model:CR8.LHC
- Voltage:3.0 V
- Physical Size:17 mm × 45 mm
- Intended Use / Compatibility:TOTO flush valves (TH559EDV410R, THP3053), Fuji FDK replacement, Eco EFVS
- Chemistry / Type:Lithium (non-rechargeable)
- Connector / Plug:With plug
- Additional Feature:1.76 oz package weight
- Additional Feature:Package dimensions listed
- Additional Feature:150 mA discharge current
Factors to Consider When Choosing Toto Battery
If you pick a battery for your Toto flush valve, you’ll want to check the chemistry type and make sure the voltage matches the valve’s requirements. Also look at capacity and runtime alongside the discharge current rating so the battery lasts through busy days without faltering. Finally confirm the connector and physical fit so installation is easy and the unit works reliably.
Battery Chemistry Type
Picking the right battery chemistry matters because it determines how long your Toto device will hold backup power and how reliably it will work in different conditions. You’ll often see lithium nonrechargeable cells as a top choice. They give high energy density, long shelf life, low self-discharge, and stable 3.0 V output, so they suit backup memory and infrequent-use valves. Alkaline costs less but drains faster and struggles in cold, so it’s less reliable for long-term backup. Rechargeable types like NiMH or Li-ion usually aren’t recommended for sealed backup modules because they need charging circuitry and can leak or pose safety risks with repeated cycling. Also pick chemistries rated for your device’s temperature range and check discharge and pulse current specs.
Voltage Compatibility Range
Because a Toto device depends on a steady voltage to work reliably, you’ll want to match the replacement cell’s nominal voltage and its real-world behavior to the device’s needs. Check that the nominal voltage equals the device requirement, often 3.0 V for flush-valve backup cells, so you don’t risk malfunction. Also verify the acceptable voltage tolerance, such as ±0.1 to 0.3 V or the range the manufacturer lists. Look at the battery’s discharge curve and minimum cut-off voltage. Choose cells with a flat discharge profile so they stay within the device threshold longer. Should you employ multiple cells, calculate combined voltage and make certain proper balance to avoid overvoltage or undervoltage. Never use higher nominal voltages than specified.
Capacity And Runtime
Consider capacity as how much energy the battery can store and how long it will keep your Toto device running. You’ll look at mAh ratings initially because higher numbers mean longer runtime under the same load. For example, a 2600 mAh cell will last much longer than a 1000 mAh cell. Then divide capacity according to your device’s average current to estimate hours of use, so you can plan replacements without stress. Also check discharge ratings so peak and continuous currents don’t cause voltage sag and missed cycles. In case your Toto unit sits idle often, choose cells with low self discharge to keep capacity for years. Finally, recall cold cuts effective capacity, so derate mAh below 0°C to avoid surprises.
Connector And Fit
After you’ve checked capacity and runtime, don’t ignore how the battery actually plugs in and sits inside your Toto device. You’ll want to confirm the connector type and plug orientation so pins and polarity match. Measure the battery diameter, height, and any plug housing so it fits the compartment without bending wires. Also check pin spacing and housing latch to avoid loose connections or accidental unplugging. Pay attention to lead length and wire gauge so routing stays neat and there’s no tension on solder joints. Look for keyed shapes, retention clips, and polarity markings on both connector and receptacle to guide proper alignment. These checks protect the device and make installation calm and predictable, saving you time and worry.
Discharge Current Rating
Consider about how the battery will handle the valve’s power needs whenever it kicks on, because a mismatch can leave you standing with a weak flush or a stressed battery. You should match the battery’s maximum continuous discharge to the valve’s peak draw so activation surges don’t cause voltage drop. Also pick a battery with a discharge rating comfortably above steady-state and startup currents, since repeated high-current pulses shorten life. Low internal resistance helps through reducing voltage sag during flush pulses, so prioritize cells that list low resistance and higher allowable discharge. For frequent actuations, choose higher discharge capability to keep capacity loss per pulse low. Finally confirm the specs include pulse and duration limits because short spikes might be fine whilst sustained currents are not.
Operating Temperature Range
Whenever the bathroom gets cold in winter or hot in summer, your Toto’s battery needs to keep working so the valve fires reliably and you don’t end up with weak flushes or failed cycles. Pick a battery whose operating temperature range exceeds the site conditions. For indoor bathrooms, look for roughly −20 to +60 °C. For exposed or industrial locations, aim for −40 to +85 °C or wider. Batteries with wider tolerance keep capacity and discharge behavior steadier, so they won’t quit when you need a strong start current in the cold. Recall cold cuts usable capacity and output, while heat speeds chemical wear and self discharge. In case temperatures swing often, choose cells rated for thermal stability and low self discharge to protect performance through repeated cycles.
Durability And Shelf Life
Temperature extremes you just read about affect more than immediate performance; they also shape how long a battery will sit on a shelf and still work when you need it. You should pick low self-discharge chemistries like primary lithium because they hold most capacity for years in storage. Look at rated shelf life; many advertise five to ten years at room temperature, so you can plan ahead. Pay attention to operating temperature range since heat or cold speeds capacity loss and shortens usable life. Also check specified capacity and standby or leakage current; lower quiescent draw helps backup devices last longer. Finally, follow storage and handling tips, store batteries in a cool dry place, and never try to charge non-rechargeable cells.
Manufacturer And Warranty
Upon purchasing a Toto battery, confidence starts with the maker, so look for firms that show clear proof of safe, steady production and stand behind their cells with real warranty protection. You should check certifications like ISO and UN38.3 and read independent test reports. Then confirm warranty length and scope, noting covered failures such as premature capacity loss or manufacturing defects and whether you get replacement or refund. Also learn claim steps and required documents like proof of purchase, serial numbers, and installation date, and whether you contact the retailer or manufacturer. Pay attention to stated shelf life and service life in the terms, and make sure exclusions do not void coverage for your intended use or environment.
