Maxlithium 9V Rechargeable Batteries - Long-Lasting Power for Your Devices

xavier vilana: Carga rapida

Spain on Mar 16, 2023

Charlotte G. Johnson: I thought a wall plug in would be included but wasn’t. It was overall ok because my extension power strip has a couple usb ports so I charge it there.
I use a tens unit for pain , so go through a lot of disposable batteries. Prices keep going up on batteries so getting a rechargeable battery system made more sense and has saved me a lot of money so far. Each charge lasts a long time , so much more than disposable batteries. So far so good, glad I made this purchase.

United States on Jan 11, 2023

Amazon Customer: Purchased these batteries because of the good reviews. My wife uses a Tens unit and keeps it on most of the day. The first battery lasted a little over a week. What was also great was she set the unit at a 3 on the dial and never had to increase the setting as the days went by as she had to in the past. Is this possible that the output stays at maximum level until the charge runs out. If the other 2 batteries that came with it and the charger work as well we are very happy campers.

United States on Oct 24, 2022

Marky Mark: i did a discharge capacity test on all 3 pcs at an abnormally high current of 0.550A rate. this is FAR more than would be normal for a 9V. the batteries had no trouble doing this. so they should easily handle a normal 9V load. they are rated at 800 mAh. i got 820, 750, 780 on my three, but this was at 0.550A, so at a lower rate they would give bigger numbers! so i'd say they are very good batteries that meet their rating with no sweat. the charger works well, charges rapidly, and everything seems good quality. the box they come in is good for storage and also of good design. when the batteries are drained, the internal cut off circuit works well. i would not use these in a fire alarm, cuz they usually beep with a weak battery and this battery may be fully discharged and shut off, so u would get no warning beeps maybe.

United States on Aug 15, 2022

Desmond Vancouver: Good general purpose 9V battery replacement but never reach 9V

Canada on Mar 22, 2022

James: I bought it for my Tens machine, kept me many hours to use it after first charging. Definitely Recommend

Canada on Nov 06, 2021

Shama: Saw a video or two about comparing 9V batteries (rechargeable and single use only), and this appears to be the best bang for the buck. So far so good. Though I would prefer it come with a longer charging chord.

Will update if anything changes

Canada on Dec 07, 2020

Amazon Customer: Three batteries with a sit down charger (power supply not provided only wire). I numbered at the bottom of each battery 1, 2, and 3. This way I recycle through the batteries in order. This will save us money with our wireless mic.

Canada on Sep 25, 2020

Mad Monty: Since I wrote my original review, I've added a sixth battery of this type (9V Lithium ion rechargeable) to the series I've tested using calibrated lab equipment. The new one, Exmate, has the highest measured life (840 mAh, even above its advertised 800, a rarity). At $4 apiece, it is the best value not only for a true 800 mAh battery, but cheaper than most of the lower capacity ones as well. This Exmate brand replaces the Energitech as the best value I've found in terms of cost per mAh (.48 cents/mAh), and replaces the MaxLithium as the highest capacity, all as tested up to 1-16-22.

I previously tested 5 brands of Li-ion rechargeable 9V batteries using calibrated test equipment. Back then, the Energitch brand battery ranked #3 in runtime and #1 in value. The measured capacity (think runtime) was 510 mAh (vs. claimed capacity of 600 mAh) and cost $2.25 but now is $4.50. The longest run time was MaxLithium (750 mAh) and cost $5.60. The best value (mAh per $) back then was Energitch (510 mAh) at $2.25. For comparison, a new Amazon Basic non-rechargeable alkaline battery had a capacity of 490 mAh and cost $1.31. (For the other brand reviews, click on my name.)

Notes on...

United States on Aug 30, 2020

mpilgrim: I started switching to rechargeable 9Vs in my guitar pedals (and using external battery/DC adapters for mini pedals that don't support batteries) when rechargeable 9Vs hit the 600mAh mark. They finally lasted long enough, were portable (now only the amp needed a power feed, so pedals could be placed anywhere), and avoided all 50/60Hz hum issues without paying $200+ for a fancy isolating/filtering power brick. Granted, I have a relatively simple setup, with only 4-5 dedicated overdrive pedals, and a small multi-effects system to handle all other effects (BOSS GT-1) -- so batteries are more viable in this scenario than, say, a pedal board with a dozen or more pedals. But for simpler setups like this, it works perfectly, so long as you're disciplined in always keeping your batteries properly charged.

Now with these 800mAh rechargeable 9Vs, they last even longer, work better with fancier/more power-hungry pedals, and charge much faster. My previous charger that came with my old 600mAh rechargeable 9Vs took over six hours to charge from completely dead, while these only take a couple hours. Plus, the charger is less than half the size of the old one, making it more portable to...

United States on Jul 05, 2020