The cheapest 36V packs out there tend to cut corners on the BMS or cell quality. The LGNUO packs 720Wh in a compact frame with a 30A BMS and a USB charging port, features usually found on pricier batteries. At 9.2 pounds and roughly the size of two thick textbooks stacked, it fits tight frame triangles most downtube batteries won't.
Lgnuo offers a 720 wh battery in a very compact body, along with a 30 amp bms and a USB charging port, normally reserved for higher priced options.
Specs and Build Quality
The specs indicate this is a 36 volt 20 ah battery rated for 720 wh. To find the watt-hours, multiply the volts by amps -- 36 x 20 = 720 wh. Based on the number of volts and amperage, the distance range should be around 20 to 35 miles based on the type of motor used, grade of terrain ridden, amount of assistance from pedaling, and reliance on throttle.
Its measurements are 14.5 by 3.54 by 4.5 inches. Due to its thinness, this is going to make a big impact on bikes that do not have large triangular spaces available for batteries. Weight wise, it is slightly heavier than a 10 ah unit due to having additional capacity, however the weight will allow you to go farther on each charge. The outer casing is waterproof to allow for riding in the rain and there is a security lock provided for securing the battery to its mount.
It comes equipped with a 42 volt 3 amp fast charger. From dead empty to fully charged the charger will take approximately 6 to 7 hours. Considering this is a 20 ah battery, that is actually pretty good for a budget option. Many cheaper options come with a 2 amp charger that will take all day to complete.
BMS and Safety Features
The real selling point of this product is the 30 amp BMS. The BMS protects against excessive charge rates, excessive discharge rates, shorts circuits and excessive current draw. According to LGNUO, this BMS can withstand over 1,000 charge/discharge cycles before losing any appreciable amount of capacity. In addition to these protections, there is a power indicator light located on the side of the unit displaying the state-of-charge via an LED display. When the unit is turned off using the switch provided, it reduces the drain on the unit while in storage mode. Additionally, there is a USB port allowing users to charge their mobile phones or cameras during long trips when both devices may run out of power sooner than the bike battery.
According to the specifications listed on Amazon, LGNUO claims these units utilize grade A cells. While we cannot confirm what brand of cells were used, we believe that these cells meet average standards for quality. The estimated lifespan is over 1,000 cycles which is typical of decent quality lithium-ion cells utilizing the 18650 configuration.
Who Is This Battery For?
This battery is ideal for riders seeking a reliable and high capacity yet reasonably priced 36 volt battery pack. With a rating of 720 wh, this unit provides sufficient range for commuters needing to travel distances ranging from 10 to 20 miles per direction with minimal reserve margin. Since the unit is waterproof, it allows riders to continue riding in rainy conditions without worry regarding damage to the electronic components.
As mentioned earlier, one of the best features added to this unit is the inclusion of a USB port for charging small devices such as GPS devices or smart phones. Many lower cost units do not include this feature and require riders to carry a portable power source.
One potential issue with purchasing this unit is the fact that there are no reviews posted from prior buyers. This indicates that either this unit was recently listed on Amazon or that few customers have purchased it. Although LGNUO appears to be a reputable manufacturer with several other products reviewed positively on Amazon, since there are no reviews associated with this particular model, you will need to base your decision solely upon the information listed in the product description. The 30-day return policy and 12-month warranty provide some backup if there are issues.
This is also a solid choice if you want to compare specs against other 36V options on the ebike battery comparison table. That table sorts by value per watt-hour so you can see where this pack really lands.
Frequently Asked Questions
What voltage does the LGNUO 36V battery charge to?
The included 42V 3A charger handles the full charge cycle. A fully charged 36V lithium-ion pack reads about 42V off the charger. The BMS manages the top and bottom cutoffs automatically.
Will this battery fit my ebike?
Check your bike's battery mounting area. The dimensions are 14.5 by 3.54 by 4.5 inches. Measure your frame triangle or existing battery tray before ordering. It uses a generic rectangular form factor rather than a brand-specific downtube shape.
What motor power is this battery compatible with?
Rated for 0-1000W motors. The 30A BMS delivers up to about 1080 watts peak. For a 250W or 500W hub motor it has plenty of headroom. For a 750W or 1000W motor, you are closer to the limit.
How long does the LGNUO 36V battery take to charge?
About 6 to 7 hours from empty with the included 42V 3A charger. If you upgrade to a higher amp charger, the BMS still manages the charge rate safely. This is faster than the 8 to 10 hours you would get with a 2A charger.
Does the LGNUO battery come with a warranty?
Yes. It includes a 3-month return and refund period plus a 12-month warranty with free repair. Contact the seller through Amazon for any issues.
Can I use this battery on a 48V system?
No. This is a 36V battery pack. It charges to 42V nominal and uses a 42V charger. Do not connect it to a 48V controller or charger. If you need a 48V battery, check the comparison table for other 48V options.
How does the LGNUO compare to other budget 36V 20Ah packs?
The main advantage here is the 30A BMS at this price. Many budget 36V 20Ah packs use a 20A or 25A BMS which limits peak output. The USB port is another bonus. The trade-off is the unknown cell brand and the lack of customer reviews. If brand name cells matter to you, look at higher priced options.