No. Never mix old and new batteries in a single device - battery leakage may occur. Replace all batteries in a device at the same time.
FAQ Batteries
Can old and new batteries be mixed in a single device?
Can old and new batteries be mixed in a single device?
Why shouldn't you mix old batteries with new ones?
Why shouldn't you mix old batteries with new ones?
Can different battery types be mixed in a single device?
Can different battery types be mixed in a single device?
Can batteries be stored in devices for long periods of time?
Can batteries be stored in devices for long periods of time?
When should I remove batteries from my device?
When should I remove batteries from my device?
How does coldness affect batteries?
How does coldness affect batteries?
How does a battery work?
How does a battery work?
What is inside a battery?
What is inside a battery?
Who invented the battery?
Who invented the battery?
How do I find the right VARTA Alkaline battery?
How do I find the right VARTA Alkaline battery?
How are batteries being recycled?
How are batteries being recycled?
How should I dispose of my Alkaline batteries?
How should I dispose of my Alkaline batteries?
Where should batteries be stored?
Where should batteries be stored?
What has changed in regards to performance and why?
What has changed in regards to performance and why?
What has changed in terms of design / packaging and why?
What has changed in terms of design / packaging and why?
FAQ Special batteries
I use batteries from another brand, how can I find a VARTA equivalent?
I use batteries from another brand, how can I find a VARTA equivalent?
How can I find the right battery type for my device?
How can I find the right battery type for my device?
What to do if a child has ingested a button / coin cell?
What to do if a child has ingested a button / coin cell?
FAQ Rechargeable & Charger
Can VARTA Rechargeable NiMH batteries be used in any device that runs with alkaline batteries?
Can VARTA Rechargeable NiMH batteries be used in any device that runs with alkaline batteries?
Which devices do VARTA Rechargeable batteries suite best?
Which devices do VARTA Rechargeable batteries suite best?
How can I find the right capacity for my device?
How can I find the right capacity for my device?
How many times can I charge VARTA Rechargeable NiMH batteries?
How many times can I charge VARTA Rechargeable NiMH batteries?
Are VARTA Rechargeable NiMH batteries available in all sizes?
Are VARTA Rechargeable NiMH batteries available in all sizes?
Do VARTA Rechargeable NiMH batteries have to be fully discharged before recharging?
Do VARTA Rechargeable NiMH batteries have to be fully discharged before recharging?
Do VARTA Rechargeable NiMH batteries need to be charged before using them from the pack?
Do VARTA Rechargeable NiMH batteries need to be charged before using them from the pack?
Do VARTA Rechargeable NiMH batteries need to be charged in a VARTA brand charger?
Do VARTA Rechargeable NiMH batteries need to be charged in a VARTA brand charger?
The rechargeable batteries become warm during the charging process. Is that normal?
The rechargeable batteries become warm during the charging process. Is that normal?
What is the difference between the VARTA Rechargeable NiMH battery ranges Recharge Accu Power and Recharge Accu Recycled?
What is the difference between the VARTA Rechargeable NiMH battery ranges Recharge Accu Power and Recharge Accu Recycled?
How can I maintain the performane of my rechargeable battery for a long time?
How can I maintain the performane of my rechargeable battery for a long time?
How should a Rechargeable battery be stored?
How should a Rechargeable battery be stored?
How to dispose of my used batteries?
How to dispose of my used batteries?
Does quick-charging damage my rechargeable battery?
Does quick-charging damage my rechargeable battery?
What must be taken into account when charging rechargeable batteries?
What must be taken into account when charging rechargeable batteries?
How can the general charging time be calculated?
How can the general charging time be calculated?
How do chargers with a timer cut-off work?
How do chargers with a timer cut-off work?
What must be taken into consideration when charging with the LCD Ultra Fast Charger+?
What must be taken into consideration when charging with the LCD Ultra Fast Charger+?
Can Alkaline Primary Batteries be recharged?
Can Alkaline Primary Batteries be recharged?
Can I also charge NiCd (Nickel-Cadmium) rechargeable batteries with a charger for NiMH (Nickel-Metal Hydride) rechargeable batteries?
Can I also charge NiCd (Nickel-Cadmium) rechargeable batteries with a charger for NiMH (Nickel-Metal Hydride) rechargeable batteries?
Do NiMH batteries need to be completely discharged before charging?
Do NiMH batteries need to be completely discharged before charging?
Can old and new rechargeable batteries be mixed in one charger?
Can old and new rechargeable batteries be mixed in one charger?
What is the difference between single slot and pairwise charge?
What is the difference between single slot and pairwise charge?
How often should rechargeable NiMH batteries be conditioned?
How often should rechargeable NiMH batteries be conditioned?
What is temperature control?
What is temperature control?
What is timer cut-off?
What is timer cut-off?
What is minus Delta V (-dV)?
What is minus Delta V (-dV)?
What is "Trickle Charge"?
What is "Trickle Charge"?
Can VARTA chargers be used worlwide?
Can VARTA chargers be used worlwide?
FAQ Portable Power
Which devices can be charged with a Power Bank?
Which devices can be charged with a Power Bank?
What does "mAh" stand for?
What does "mAh" stand for?
Does a high capacity Power Bank charge a phone faster than a low capacity Power Bank?
Does a high capacity Power Bank charge a phone faster than a low capacity Power Bank?
How can a Power Bank be charged?
How can a Power Bank be charged?
Why does a Power Bank have input and output ports?
Why does a Power Bank have input and output ports?
What is the meaning of the input and output figures in the product description?
What is the meaning of the input and output figures in the product description?
What kind of cables are needed to charge a Power Bank?
What kind of cables are needed to charge a Power Bank?
What kind of cables are needed to charge a phone/tablet or other device?
What kind of cables are needed to charge a phone/tablet or other device?
Why is the Power Bank unable to charge my tablet?
Why is the Power Bank unable to charge my tablet?
What type of batteries are used in Power Banks?
What type of batteries are used in Power Banks?
Do the Power Banks have a memory effect?
Do the Power Banks have a memory effect?
Is it normal that a Power Bank becomes warm during operation?
Is it normal that a Power Bank becomes warm during operation?
How should I store my Power Bank?
How should I store my Power Bank?
How do I prolong the life of my Power Bank?
How do I prolong the life of my Power Bank?
Can I take my Power Bank on the airplane?
Can I take my Power Bank on the airplane?
How does wireless charging work?
How does wireless charging work?
What is 'Qi'?
What is 'Qi'?
What is my warranty for VARTA Power Banks?
What is my warranty for VARTA Power Banks?
FAQ Lights
What is ANSI?
What is ANSI?
What does light output mean?
What does light output mean?
How is the runtime measured?
How is the runtime measured?
How is beam range measured?
How is beam range measured?
What is the difference between lumens, lux and watt?
What is the difference between lumens, lux and watt?
What does shock proof mean?
What does shock proof mean?
What does IP stand for?
What does IP stand for?
What is the difference between water proof and water resistant?
What is the difference between water proof and water resistant?
Can I use other batteries than VARTA batteries for the flashlights?
Can I use other batteries than VARTA batteries for the flashlights?
What is happening if I insert batteries wrong way up?
What is happening if I insert batteries wrong way up?
Are VARTA Lights safe and secure products?
Are VARTA Lights safe and secure products?
Which are the advantages of LEDs?
Which are the advantages of LEDs?
Do LEDs need to be replaced?
Do LEDs need to be replaced?
What LEDs are used in VARTA lights?
What LEDs are used in VARTA lights?
What is a COB LED?
What is a COB LED?
Does the 3 years VARTA guarantee for flashlights include batteries and LEDs?
Does the 3 years VARTA guarantee for flashlights include batteries and LEDs?
Do VARTA lights have low battery indicators and if so, how do they work?
Do VARTA lights have low battery indicators and if so, how do they work?
What is the advantage of frosted lenses at area lights?
What is the advantage of frosted lenses at area lights?
Can rechargeable accus be used for flashlights?
Can rechargeable accus be used for flashlights?