This.
I bought my Levo in 2018, and at that time Spec had the BEST control loop / torque sensor / motor controller integration by far. Very smooth, natural application of power on startup and stopping.
I have no idea what the current competition is doing, but I suspect they have caught up...
YES, if you want to preserve cycle life (overall number of charge cycles). I own one of these from Luna Cycles. This is much more controlled than using a timer arrangement.
However, these will create cell imbalance if used exclusively at any setting other than 100%, as the BMS only balances...
Yeah, I forgot the obvious "damage to the cells" problem. Any Lithium Ion cell that has its casing compromised is a potential bomb that needs to be treated with caution and care. Put it outside. Do not use it.
There was a time when new, quality cells were difficult to obtain and expensive. Many people recycled cells from retired battery packs (think laptops and scooters) to make upscaled packs. Some of those upscaled packs went into bikes.
Upcycled cells are never well-matched. Even if you...
I think that most fires are associated with using recycled cells and other bad building practices (see "hover boards"). I doubt that any modern commercial ebike batteries catch fire.
Because whatever caused the initial imbalance (likely higher cell resistance) will likely get progressively worse. The parallel cell group at a lower voltage when the charging stops will remain at a lower voltage (cuz no balancing).
If they are only 5 mV down with each charge cycle...
First off, batteries with quality cells charged with an OEM charger will charge at a relatively slow rate. Most cells are rated at a 1C rate. This means you could charge to 100% in one hour. But the OEM chargers charge at a very conservative rate of ~.2C (or so). So the cells do not get...
A well made battery should not be affected by shock and vibration. There is little room for movement, which causes fatigue and strain.
Having said that, I am deep into rebuilding a friend's e-bike pack that was made with nickel-plated steel interconnects.
Nickel-plated steel is well known in...
Keep your batteries inside if at all possible, especially while charging.
As for me, I am using the "Trail" power setting more often during rides instead of "Eco" to keep me from getting overheated.
I rode this morning in 95F (35C) and still climbed 1500 feet (460m) in an hour.
I have paired the Garmin (Edge 530) with the Levo's speed/cadence sensor, primarily to get the cadence data. I would like to only use the GPS to track course, distance, speed, etc. It appears once you pair the speed/cadence sensor you cannot select GPS.
I do not have a separate wheel speed...
So, let me clarify a bit. The speed readings are normal until they are not. The speed jumps to crazy fast speeds. On a recent ride, the speed went from 14.7 to 109.9MPH (109.9 seems to be some digital limit) for 15 minutes, and 2,150 miles. Then it drops back to normal speed.
1 - The native Levo speed/distance "sensor" is on the rear wheel, not the front. So on a mullet, that would be a 27.5" wheel.
2 - I have the same problem (unreliable speed/distance) with my Garmin and my Levo Gen1. Garmin told me it was caused by glitches in the GPS data. I have a manually...