I bought their older set of rechargeable batteries that had flashing red LEDs. They would last about 7 days on my wireless mouse and then I would have to recharge them, this was no issue. Two of the batteries stopped recharging so I bought another set. After getting the new set they no longer have a red LED they just flash blue which is distracting at times, they don't seem to hold a charge for as long. These new batteries only last around 3 days and all of them have already stopped charging. I will be getting my rechargeable batteries from someone else.
Update: The company responded to me and gave a refund after giving me a set of steps to follow. They seemed adamant that the product works well and I could be doing something wrong. I checked the output voltage on my USB line with a volt meter when the charge cycle would start. I realized since the USB extender was so long the current draw was causing the voltage to drop below the required levels to charge properly. Now I just charge them directly off a powered HUB and all the new batteries seem to charge fully now. The older ones have just died from age at this point so overall the batteries are holding up.
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4.4 out of 5
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1,513 global ratings
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Ok output capacity, built in charger, cannot be USB charged while in use, no low voltage warning
Warning: Those batteries output 1.5V as expected, but if they are low and you want to recharge them while powering the device that they are plugged in, it's not unreasonable to think you can plug them into a USB battery pack while they are being used in a device.I did that, and the batteries started outputting 5V which fried the GPS they were plugged into.I'm obviously not happy.I figured that out by using a volt meter after the fact and seeing the battery terminal voltage change from 1.5V to 5V after I plugged them into USBApart from this issue that will hopefully not be a problem for most:I tested 4 kinds of Lithium AA batteries, and I'm putting the test results below.There were the 2nd best (new Xtar are the best, EBL is 2nd best since it has the same capacity but without custom charger)New Xtar: Rating: 4.15Wh, Charge: 5.5Wh, 3.45Wh Usable discharge at 1Ahttps://www.amazon.com/gp/product/B0CF8ZNZ33/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1Summary:* This is the only lithium battery that drops its voltage to 1.1V to give you a low voltage warning. Other batteries I tested just die with no warning. That alone is a reason to select it. I tested it with my garmin GPS and it gave me 2H of low battery warning before finally dying. Very nice!* It is also the battery that gave me the most actual discharge capacity* Seller is not lying about cell capacity (thank you) which of course is higher than actual usable energy due to conversion losses* New charger is unfortunately bigger than the old one and drops the USB-A output feature to use your batteries as an emergency USB charger* Verdict: this is the best battery I tested and what you should buy as long as you don't need a built in charger like EBLOld Xtar: Rating: 3.3Wh, Charge: 5.3Wh, 2.7Wh Usable discharge at 1Ahttps://www.amazon.com/gp/product/B09NLVJDY6Summary:* This is the older Xtar battery. It had best in class capacity until the newer one that came out with added low voltage warning. There is no good reason to buy this battery anymore, get the new one.* Its capacity is equivalent ot the EBL battery with built in USB charging, so the EBL is more versatile* The charger is very compact and can act as a USB power source, that's a nice feature.* 10.6Wh to charge 2 batteries, or 5.3Wh charge per batteryEBL 3.3Wh rating, Charge: 4.3Wh, 2.7Wh usable discharge at 1Ahttps://www.amazon.com/gp/product/B08RZ5NDMMSummary:* There is no low voltage warning, but the battery capacity is actually equivalent to the old Xtar despite the space lost to the built in charger. The new Xtars last longer than the EBL though.* Interestingly EBLs need less energy to charge than Xtar for the same output capacity, they are more efficient* Big warning: if you try to charge the batteries via USB while they are in use, they are going to output 5V instead of 1.5V. This is unexpected and fried one of my GPSes. You cannot charge them while they are being used.Deleepow 3.4Wh rating, 3.8Wh charge, 2.4Wh usable discharge at 1Ahttps://www.amazon.com/gp/product/B09NLXQRP3Summary:* These battery are not for sale anymore, and they were the least performing amongst the ones I tested.* The 3.4Wh cell capacity is probably untrue with the charge and discharge numbers I got
Top reviews from the United States
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Reviewed in the United States on May 3, 2024
Reviewed in the United States on January 12, 2023
EBL 3300 mWh AA: 25 hours
AA Alkalines: 145 hours
That's not a misprint! The alkalines powered that string of lights for over 6 days! One interesting factoid was the end game for the EBL's was a quick death. The LEDs stayed bright, then suddenly went out. The LEDs powered by the alkalines gradually faded over the last two days.
I gave the EBLs 4 stars because they work fine in my Apple Magic Mouse. Even though they don't last as long as the alkalines, they last long enough that it's not a hassle to take them out and recharge them when they die. I'd hesitate to use them for anything with a large power draw since they simply don't pack a lot of juice.
Convenient, but don't last as long as alkalines
Reviewed in the United States on January 12, 2023
Bought a set of these EBL AA batteries and did a head-to-head comparison against Energ*zer AA alkalines. I used 3 batteries to power a string of LED fairy lights and let them run until the lights went out. Here are how the results (time until lights out):Reviewed in the United States on January 12, 2023
EBL 3300 mWh AA: 25 hours
AA Alkalines: 145 hours
That's not a misprint! The alkalines powered that string of lights for over 6 days! One interesting factoid was the end game for the EBL's was a quick death. The LEDs stayed bright, then suddenly went out. The LEDs powered by the alkalines gradually faded over the last two days.
I gave the EBLs 4 stars because they work fine in my Apple Magic Mouse. Even though they don't last as long as the alkalines, they last long enough that it's not a hassle to take them out and recharge them when they die. I'd hesitate to use them for anything with a large power draw since they simply don't pack a lot of juice.
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Reviewed in the United States on June 3, 2024
Reviewed in the United States on December 20, 2023
Reviewed in the United States on December 24, 2023
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