Rechargeable 9V Smart Batteries with USB Charger by Pale Blue, Lithium Ion 9 Volt 500 mAh, Charges Under 1 Hour, Over 1000 Cycles, 2-in-1 USB to USB-C Charging Cable, LED Charge Indicator, 2-Pack

Rechargeable 9V Smart Batteries with USB Charger by Pale Blue, Lithium Ion 9 Volt 500 mAh, Charges Under 1 Hour, Over 1000 Cycles, 2-in-1 USB to USB-C Charging Cable, LED Charge Indicator, 2-Pack

Q: Do these work in fire and CO detectors?

If the detectors use 9V batteries, they'll work. They're standard 9V batteries, just instead of NiMH or acid, they are lithium ion usb rechargeable.

Q: Is the 9v battery good for voltage-sensitive devices? ie does it operate at 9v or closer to 8v?

This is a lithium ion battery and the chemical component of these batteries will outlast the alkaline batteries that we normally use. the charge will remain linear for a certain period in relation to what equipment we use. for high discharge rate equipments like motors depending on how we use,or use in continuous manner it will last for around 3 hours depending on my experience and you can recharge again.the voltage drop is sudden so do not overuse it.when you feel or sense something that is unusual recharge immediately.

Q: Do the 9 volt batteries still charge from a 5 volt charger?

No, they will not. The specific charger for a 9volt steps up the 5v usb to aprox 10v to charge the batery. Much like a 12v car battery; charges at 13.8v giving a surface charge of 12.5v

Q: Does the 9V battery have a boost circuit inside to provide a constant 9.0V output, or is the output just two cells in series for 8.40V maximum voltag?

I don't know what hardware is inside the batt as I did not open them. but I test the battery in a Multimeter seen to be giving out the correct amp & voltage, also the multi uses 9v seen to be working good and I use it a lot. Also, the stud finder is a hug, will kill a commercial 9v within hours, the 9v has worked wonderfully. now if they have the same hardware inside as the AAA yes I see then having issue delivering the same continuous current to your device especially if the device pulls a lot. I used the AAA on group of 3 on a headlamp and for the first 5-10 minutes I have a good light bright then dims down to low light, I left it on to fully drain the batteries for over 24hr still on so at least that is a plus.

4.4/5

Product ID: 576385980

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Details

Brand
paleblue
Item weight
0.03 Kilograms
UPC
850040149388
Manufacturer
paleblue

⚡Charges in under 1 hour

🔋500 mAh capacity

♻️Over 1000 cycles

Frequently Bought Together

Paleblue USB Rechargeable 9V Batteries (2-Pack) - 4500mWh Lithium Ion, 1000+ Charge Cycles, Includes 2-in-1 USB-A to USB-C Charging Cable, LED Charge Indicator, 3.4 Hour Charge Time

paleblue USB Rechargeable AA Batteries (4-Pack) - 2550mWh Lithium Ion, 1.5V, 1000+ Charge Cycles, Includes 4-in-1 USB-A to USB-C Charging Cable, LED Charge Indicator, Quick 1.9 Hour Charging

paleblue USB Rechargeable AAA Lithium Batteries, 1 Hour Charge Time, Recharge Over 1000 Times, 600 mAh, 4-in-1 USB-A to USB-C Charging Cable, 4 Pack

Description

🔌 Charge Less, Play More!

FAST EFFICIENT - Get back to action with a quick charge under 1 hour.
POWER UP YOUR PLAY - Rechargeable lithium-ion batteries for endless fun!
ECO FRIENDLY CHOICE - Reduce waste with over 1000 recharge cycles.
VERSATILE COMPATIBILITY - Perfect for toys and more—power your passions!
SMART CHARGING MADE EASY - Includes a 2-in-1 USB to USB-C cable and LED charge indicator.

The Rechargeable 9V Smart Batteries by Pale Blue are designed for the modern user, featuring a powerful 500 mAh lithium-ion composition that charges in under an hour. With over 1000 cycles of reusability, these batteries come with a convenient 2-in-1 USB to USB-C charging cable and an LED charge indicator, making them the perfect eco-friendly choice for powering your favorite toys and devices.

Have a Question? See What Others Asked

Do these work in fire and CO detectors?

Is the 9v battery good for voltage-sensitive devices? ie does it operate at 9v or closer to 8v?

Do the 9 volt batteries still charge from a 5 volt charger?

Does the 9V battery have a boost circuit inside to provide a constant 9.0V output, or is the output just two cells in series for 8.40V maximum voltag?

Common Questions

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Rechargeable 9V Smart Batteries with USB Charger by Pale Blue, Lithium Ion 9 Volt 500 mAh, Charges Under 1 Hour, Over 1000 Cycles, 2-in-1 USB to USB-C Charging Cable, LED Charge Indicator, 2-Pack

Details

Description

Have a Question? See What Others Asked

Common Questions