Reddit reviews Keenstone UP100AC 100W Duo Dual 2 Port (CH1 10Amps,CH2 6Amps) AC/DC Balancing Battery Multi-Chemistry Charger for LiPo LiIon Life NiCd NiMh w/120Watt Power Supply USB Charge Port for Cell Phones etc
We found 2 Reddit comments about Keenstone UP100AC 100W Duo Dual 2 Port (CH1 10Amps,CH2 6Amps) AC/DC Balancing Battery Multi-Chemistry Charger for LiPo LiIon Life NiCd NiMh w/120Watt Power Supply USB Charge Port for Cell Phones etc. Here are the top ones, ranked by their Reddit score.
AC DC Powered ! Compatible with AC 100-240V,and also can be powered by DC Power.100 Watt Max OutputDual individual charger ports,and can charge two different batteries at once.Port 1 is capable of 100 Watts* and 10 Amps max output and Port 2 is capable of 50 Watts and 6 Amps max output.A 5V 2.1A USB port built into it to power and recharge your cell phone, tablet, etc.Built in Balancer,LiPo Balance Charge, LiPo Fast Charge, LiPo Storage, and LiPo Discharge modes,TERMINAL VOLTAGE CONTROL,Lithium battery meter, battery memory, power supply.It's a multi-chemistry charger so it can properly charge LiPo, LiIon, LiFe, NiMH, NiCd and Pb (lead acid) batteries
The Andymark charger which you have linked is an Lead Acid type charger (car battery). Which is not be used with NiMH batteries which are the Tetrix batteries that you use. You should be looking for a multi bank NiMH smart (balance) charging station. Something like: https://www.amazon.com/dp/B01HB6VF5Y?psc=1 Would work very well. Keep in mind with no matter what you get, you will need to put your own Anderson PowerPoles on the ends of the charging cables.
Don't do that, get a smart charger instead.
I'll link the one I have in a little bit.I have this one
and I am looking at getting this one
Both of these also have one extra really cool feature, you can power them with DC OR AC, this means, you could put a DC battery (i.e. car battery) on your cart, and recharge your robot batteries on the move.