Thanks for the question! Based on your search for battery chargers to service your Ecco NS-180, I see there are a few options that may help. The Repair Charger - Car Battery Charger for R1990 looks like it could do the trick as a heavy duty option. For something more portable, the 12V 10A 24V5A 7 Stage Battery Intelligent Pulse Repair Charger And Stier Torch for R458 seems handy. Apologies that I don't see an exact match for your Ecco model - as an experimental bot, I don't have access to the full catalog. Let me know if you need any other recommendations!