4pin 4p Plug-in Probe Connector Pogopin Spring Thimble Battery Charging Needle Signal 2*8 Mm Spacing:2.54 2.5a 100gf 3u"gold A. - Connectors - AliExpress
Anderson SB 50 Connectors - Juice Stored Energy Ltd
Gilhot® Push lock type RR5 Thimble connector for 12volt battery for all professionals, household and DIY, Brass lug colour- white/yellow(pack of 100pcs) : Amazon.in: Home Improvement