Charging from a vehicle ?

[xcentric]

Anyone tried one of these?
Idealplusing 10a 420w 12v/24v To 42v Dc Dc Boost Inverter Power Supply Converter - Buy Power Supply 42v,9v To 12v Converter,240w Power Supply Product on Alibaba.com


DC-DC charger, so much more efficient that DC-AC-DC.....

 

[Aleksius]

My Skoda has an inverter plug that I’ve occasionally used to charge my previous ebike. Not the fastest and the car needs to be running or it will turn off the power to the plug after 15 minutes. But anyhoo I was thinking to try a DC charger this time around.

Any thoughts on this? BMZ makes the chargers for Focus for example

12V mobil Car Charger BMZ Li-Ion 42V 2A plug Rosenberger 31733 | Charger | BMZ Group

The mobil car charger with 2 Ampere charging current and 42 Volt voltage. Best quality only from BMZ with daily shipping and professional support.

ebike.bmz-group.shop

Cost isn’t too bad, first google hit:

BMZ - 31733 - KFZ Ladegerät 12 Volt für 10S Akkus / 36 Volt eBike Akk

mobiles Kfz Ladegerät 2 Ah Ladestrom, 42 V Spannung, 84 Wattstunden Leistung

akkuplus.de

I need to dome some hard thinking if the DC charger can push in more Watts than regular charger using the cars built in inverter.

 

[Aleksius]

To answer myself the standard Levo charger has an output rating of 42V 4A whereas the linked DC charger has 42V 2A output so basically half.

 

[Kernow]

To answer myself the standard Levo charger has an output rating of 42V 4A whereas the linked DC charger has 42V 2A output so basically half.

I found a Bosch charger for 12v car use , they no longer make them , but it says they are unsuitable for charging the battery if it’s below 40% . O would imagine if would take a long time and you need to be driving for at least some of the time . I think an inverter will be cheaper and hopefully more efficient , just need to Wade through the minefield of inverters on sale

 

[Petrex]

If not already mentioned ?
Charger for Specialized needs 5V on the plug signal pin (forget the pin number) to start charging.
Could probably be added to a generic charger setup from the charger PCB.

Just got a BMW Levo charger and it works for my Turbo Levo Comp Alloy

BMW Specialized Levo Kenevo 12V Battery Charger eBike | eBay

Find many great new & used options and get the best deals for BMW Specialized Levo Kenevo 12V Battery Charger eBike at the best online prices at eBay! Free delivery for many products.

www.ebay.co.uk

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