[RFI] Suggestions for an RFI-clean battery charger/maintainer

[Andy KU7T]

Hi,

I found a bad battery charger at my neighbors house and would like to replace it with a better one.  He will be mostly using it for charging his RAM truck, which has 2 truck batteries in parallel all winter (big diesel).  Also would be good to use it for charging other dead batteries around the house...

I am looking at these two. Has anyone experience with these or others or recommendations?
https://www.amazon.com/dp/B00HWL4N08/ref=emc_b_5_t
https://www.amazon.com/STANLEY-BC8S-Battery-Charger-Maintainer/dp/B00PZ0PMSA

Thanks and 73
Andy
KU7T