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KBT 12V 1200mAh Rechargeable Li-ion Battery, 12V DC5521 Male Connector, Replacement Battery Pack with 12V Charger Compatible for 12V Devices RC Car, Boat, Robot, DIY, LED Light Strip, CCTV Camera

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$16.99

$ 6 .99 $6.99

In Stock

1.Style:1.2ah Dc5521 Plug


About this item

  • Package includes: 1*12V 1200mAh battery pack, 1*12V battery charger.
  • Battery size: 70*55*20mm (L*W*T),Battery weight about 132g, battery cable length 18cm, 12V charger cable length 90cm.
  • Premium battery pack: Build in protection board, prevent battery from over-charge, over-discharge, over-voltage and short-circuit. Each battery pack is build with premium batteries to provide your devices powerful energy.
  • Long using life: this 12V battery pack build with lithium-ion battery, no memory effect, is of over 800 times charge-discharge cycles.
  • After sales service: please feel freely to contact with us for customer support if you have any probelm with the product. Your inquiry will have our prompt reply.



4.6 out of 5 stars Best Sellers Rank
  • #28,485 in Toys & Games (See Top 100 in Toys & Games)
  • #55 in Hobby Remote & App Controlled Vehicle Batteries
Date First Available April 10, 2023 Manufacturer Shenzhen (KBT) Keep Better Tech Electronics Co., Ltd

Product Description

12v

  • Built with Grade A premium lithium-ion battery
  • Long lasting life over 800 cycles
  • Small size and high capacity 12V 1.2Ah / 12V 2.4Ah/ 12V 5.2Ah
  • Connector: DC5521 / bare leads

SJ
Reviewed in the United States on March 3, 2025
this is a very handy item for testing 12 volt projects
geoff
Reviewed in the United States on February 3, 2025
Shipping was fast and the battery is exactly what I needed and described! Definitely recommend!
Stephen Chiappetta
Reviewed in the United States on January 24, 2025
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Mark Ruhm
Reviewed in the United States on January 11, 2025
I actually used the battery in my motorcycle to run the LED lights. It’s easy to use and charge.
Bob C
Reviewed in the United States on September 3, 2024
The battery specs stated on the Amazon description are a bit vague, but the capacity clearly is stated as being 2400mAh. Th battery label (clearly shown in the photos) states "Capacity: 2400mAh 26.6Wh"" and "Output: 9-12.6V/2A". The actual capacity is about 600mAh and the output is about 10.7-12.5V.My device draws 163mA. I set my LO BAT indication at 9.5V. As a final design step, I ran a life test on the battery. The battery was fully charged. I even left it on the charger for at least an hour after the charger LED switched to green. The initial voltage was 12.5V, which dropped to 12.3 volts in just two or three minutes, I monitored the voltage at 10 minute intervals. After 200 minutes, the voltage had dropped to 11.210 volts. When I went back 10 minutes later, the battery was dead - 0V. I though maybe I had a defective battery, so I tried the same test with my second battery - with the same results. This time I kept the test under close observation after the battery voltage dropped below 11.5V. The second battery hit 11.210 volts at 205 minutes. By 225 minutes, the voltage had dropped to 10.787V. 23 seconds later, the battery voltage collapsed to 0V like somebody had thrown a switch. When I read the Amazon description again, I realized that is exactly what happened. The description states that the battery has a builtin protection board to prevent over-discharge. I am convinced that this protection board shut off the battery when it had discharged to about 10.78V. That is a long way from 9V, as stated on the battery label. Also, by 225 minutes, I had used only 611mAh of capacity.I am really not happy with this battery.
LowelG
Reviewed in the United States on July 5, 2024
Purchased this battery for my trip-wire car horn camping alarm. The horns were intended for cars undoubtably, but hey I’m a DIY guy. The horn is rated at 12v-5amps(watts never tested by myself ) so when I found this battery I wasn’t sure if it would be powerful enough. Turns out the battery worked great, although the horn doesn’t reach the maximum loudness probably due to the low watt output, it is still very loud. 12v train horns don’t work with this battery, but 14v does. Battery charges fairly fast and I haven’t encountered any heating issues while in use or while charging. Battery and charger are light weight which makes it perfect for my hiking and camping expeditions. Very pleased and will buy more in the future for other diy projects. Shipped fast as well.
David W. Lennie
Reviewed in the United States on July 3, 2024
Using this battery pack, I built an oddball one-off device used in broadcast production that's too complex to explain here, but suffice to say this little battery pack works great in it and lasts a good long time. The included charger is a nice touch, and it indicates with an LED when the pack is fully charged. The cable termination options are great for DIY applications of all kinds. My only issue is that the charging input, a female DC coaxial jack, also has 12V on it. This is not a big deal but the pin could easily be shorted to the shield if something metal got jammed in there by mistake. I don't want to try it and find out what happens, but hopefully there is some protection in the pack to prevent a meltdown. Seems like a diode wired into the pack could prevent this.
Arturo Graniel
Reviewed in Mexico on May 28, 2024
Excelente, ahora a encontrarle un uso, solo pido para probar productos y entretenerme, soy jubilado y pues ya no hay que hacer
sara
Reviewed in the United States on November 26, 2024
I have 2 of these in 2 different sizes and while they work and do charge to 12.6v they seem like they must be made from extremely old or reject cells possibly because they do not hold a charge even when not used very well. So you have to charge each time you want to use and the runtime is lackluster. These are not rated at what is claimed although I did not do a thorough test. Sadly I am going to attempt to start making my own battery packs with quality batteries because there are so many scam pack out there. Stay tuned perhaps soon I will be making custom quality packs for your devices that are as good as they can be!!!
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