Ebike Battery Charger

I recently received a second charger for my Emma 3.0, and it has made charging twice as fast and much more convenient. Since the bike has two batteries, it only makes sense that you would want to charge them at the same time and this is only made possible with a second charger. The 52V/3A charger packs have a built in fan for cooling and the LED goes from red to green when a battery is fully charged. I have my Emma charging station set up near the entrance of my garage so I can pull in, park and charge at the same location. When finished, the two chargers tuck in out of the way between my pedestal grinder and compressor, ready for the next charging session. Get one today; it will make charging your dual battery Emma much easier.

Craig G. 5/5 September 22, 2024

Ebike Battery Charger

I got this so I can charge both batteries at the same time. Works great, but I do wish the bike came with two chargers instead of one.

Marcus D. 4/5 Verified September 3, 2026

Ebike Battery Charger

Honestly, I will say that the customer service is amazing. When I first spoke to them on the phone, they helped me select the correct battery and even manufactured it from their factory in China for me. Because of US customs, the battery did take a little bit of time to arrive because customs held the battery for almost 2 weeks, which was ridiculous, but that’s customs fault . The CSR stayed in touch and made sure that I was updated frequently.

David H. 5/5 June 18, 2026

Ebike Battery Charger

I have an Emma 3.0 ebike and wanted to have a faster way of charging the massive 40Amp battery and thankfully with the emma 3.0 you can use 2 chargers at the same time by connecting 1 charger to each battery allowing you to charge twice as fast. So this is definitely a must have and the charger is very affordable. I am very happy with my purchase and highly recommend you get a second charger with your Emma 3.0 bike.

Jose L. 5/5 Verified July 4, 2025

Ebike Battery Charger

I ordered an extra ebike battery charger, and I love it. It is so convenient to be able to charge both batteries at the same time to allow me to get back on the road quicker. Great Product!

Randy K. 5/5 Verified July 2, 2025

Ebike Battery Charger

I recently received a second charger for my Emma 3.0, and it has made charging twice as fast and much more convenient. Since the bike has two batteries, it only makes sense that you would want to charge them at the same time and this is only made possible with a second charger. The 52V/3A charger packs have a built in fan for cooling and the LED goes from red to green when a battery is fully charged. I have my Emma charging station set up near the entrance of my garage so I can pull in, park and charge at the same location. When finished, the two chargers tuck in out of the way between my pedestal grinder and compressor, ready for the next charging session. Get one today; it will make charging your dual battery Emma much easier.

Craig G. 5/5 Verified August 30, 2024

Ebike Battery Charger

As an ebike is a preferred transportation for daily commuting, keeping fully charged is a critical life fact. Though I have minimal range anxiety with my Emma 3.0, having a second charger for the second battery is still a must-have. Combined, Roll Road's choice of charger are quieter than either of my other two type of chargers. If indoor charging is desired but audible noise is a factor, I'd say these chargers are a great choice. While I'm surprised they opted for 3amp chargers, it's still sufficient for me to charge overnight and be ready the next day.

Paul Z. 5/5 Verified July 4, 2024

Ebike Battery Charger