Chargers where you can preset the level of charge?

[Cybersnow]

It will reduce the life of the battery by 50% or more.

This is why it's smart to buy an eBike with more range than is needed. Then, one can charge to approximately 80% for daily-type use, discharging to approximately 20%. When the full range is needed, give the full charge and use the full charge.

Charging overnight to 100% is OK if it will immediately be used the next day.

Does anyone make chargers where you can preset the level of charge? It would also be great if it came with a number of bike adapters. Even better if you could select between 48 and 52 volts. Then I could get rid ofva bunch of chargers.

 

[Smaug]

It's risky to make adjustable voltage chargers, because if they're set wrong for the battery they're plugged into, they'll overcharge and possibly start a fire, if the BMS isn't good. If the BMS IS good, it would hopefully stop charging before fire occurs. That's why you usually see them by battery voltage.

That said, we can buy adjustable voltage and current power supplies. I bought one from AliExpress awhile ago:
https://www.aliexpress.us/item/3256...t_main.16.5b9e1802Z9JZ4Z&gatewayAdapt=glo2usa

Another problem with these is that they don't stop charging once it reaches max voltage and min. charge current. It will keep trickle charging forever until you turn it off.

I bought the above power supply (not really a charger) so I could set a LOWER than usual output voltage, knowing that it would only charge the battery to around 80% of its max. For example, a nominal 48 V Li-Ion battery pack is fully charged when it's at 54.6 V. I set the next voltage down (it's not continuously variable) so that it stops charging before reaching full voltage. Then I energize the power supply through a timer, so I don't overdo it.

The Satiator by Grin Technologies is the gold standard. Choose either the medium or high voltage models, depending on which eBike, eMoped you have. You'll have to wire your own charging cable/plug:
https://ebikes.ca/product-info/grin-products/cycle-satiator.html

 

[Annieolnie]

Does anyone make chargers where you can preset the level of charge? It would also be great if it came with a number of bike adapters. Even better if you could select between 48 and 52 volts. Then I could get rid ofva bunch of chargers.

People here recommended I try a timer and it has worked out quite well for me. You end up with a sense of how long you need to charge your battery by what amount of charge it has. The one I bought allows you to just choose a button for the amount of time you want and then it is all set.

 

[Smaug]

People here recommended I try a timer and it has worked out quite well for me. You end up with a sense of how long you need to charge your battery by what amount of charge it has. The one I bought allows you to just choose a button for the amount of time you want and then it is all set.

That's the exact one I have Annie, though I think the brand name may have changed since I got mine.
I use it along with the stock chargers though, rather than the adjustable output one.

 

[munirider]

It's risky to make adjustable voltage chargers, because if they're set wrong for the battery they're plugged into, they'll overcharge and possibly start a fire, if the BMS isn't good. If the BMS IS good, it would hopefully stop charging before fire occurs. That's why you usually see them by battery voltage.

That said, we can buy adjustable voltage and current power supplies. I bought one from AliExpress awhile ago:
https://www.aliexpress.us/item/3256...t_main.16.5b9e1802Z9JZ4Z&gatewayAdapt=glo2usa

Another problem with these is that they don't stop charging once it reaches max voltage and min. charge current. It will keep trickle charging forever until you turn it off.

I bought the above power supply (not really a charger) so I could set a LOWER than usual output voltage, knowing that it would only charge the battery to around 80% of its max. For example, a nominal 48 V Li-Ion battery pack is fully charged when it's at 54.6 V. I set the next voltage down (it's not continuously variable) so that it stops charging before reaching full voltage. Then I energize the power supply through a timer, so I don't overdo it.

The Satiator by Grin Technologies is the gold standard. Choose either the medium or high voltage models, depending on which eBike, eMoped you have. You'll have to wire your own charging cable/plug:
https://ebikes.ca/product-info/grin-products/cycle-satiator.html

$330 for the charger from Grin and adaptors for an additional $13 they have 13 different adaptors so an adaptor for pretty much any plug.

I think I'll just keep using my phone timer and my multi tester to check the voltage.