Ampper Brass Battery Terminals Connectors Clamps - Heavy Duty Top Post Battery Terminal Protector Set for Marine, Car, Boat, RV & Vehicles (1 Pair) - Corrosion Resistant Power Connection for Harsh Environments

These are high quality brass terminals and were necessary to fix my problem while being budget friendly.Immediately fixed my lower Voltage operating issues.Works great of my 2010 Chrysler Town & County.I have a (3)12Voutlet+4USB 230W Inverter which displays the Voltage when on. My running readout went from 13.2-13.7previous avg. range (when fridge was on 12.6-13.1V) to 13.7-14.2 avg. range (when fridge on 13.4-13.9) , with A/C, chargers, and many accessories active.The negative terminal slid down a little tight but gradually pressed on fully and didn't have to use any tools to spread it. I just made sure the bolts were loose enough to allow for the necessary expansion.Much better terminals then my local auto parts store short term solution of cheap quality higher priced less surface contact terminals.TLDR:In early 2020 after purchasing a used 2010 Chrysler Town & Country, i'll politely understate it as being a mechanics special off a dealership trade-in listing. On 3 occassions I had an irritating issue with vehicle not starting, nor attempting too (walk away for a bit or jump then would start fine). Figured it was the basic hit the right spot on the terminal and plan on budget for new starter. Found a great deal on Amazon and bought it mid 2020. While waiting for time to install it I decided to hit the local autostore and opted to replace what appeared to be a very old undated battery and swapped the equally bad terminals with the part stores in stock terminals.Once installed the new battery/terminals vehicle started fine for 40,000 miles with no issues ever. I never got around to install the starter but fortunately didn't return it. Van was charging normally (13.2-13.8V range according to power outlet display). For no apparent reason after parking and loading van to max capacity with groceries for a family that lacks transportation, the vehicle acted dead. Temporarily stranding me in a big box store with $$$ of freshly loaded groceries (couldn't even open hatch w/o power couldn't be unlocked), since I was helping out needy family this was an extremely large inconvenience. My vehicle went from normal to absolutely showing no voltage reading at power outlet monitor, lights, etc... and without any warning bad/hard starts, misfires, engine warning lights, etc... After multiple unsuccessful attempts with my 2 different jumpboxes, as well as cables connected to a good samaritans van all yielding either just solitary click sound or nothing (usually a sign of bad starter, especially since my voltage meter showed voltage when hooked to jumpers). I went to the dreaded next stage of disconnecting the battery anticipating the purchase of a new one. Out of disgust, and before going inside to waste beaucoup dollars on something I knew I shouldn't need, I used my loads of previous backyard mechanical experience. Smacked the unworking starter with something hard trick, as well as pulling/cleaning (wire brush) up the terminals, which appeared clean but maybe could spot a very small amount of mild corrosion! I reconnected battery and attempted to start vehicle, which fired right up acting fine as it had the previous 40,000 miles of successful starts. The voltage meter showed everything had returned to normal and the wipers, doors, and various other items that went nuts when first applying voltage from jump tools recycled back to normal positions. Hence with no obvious corrosion issue on terminals, clean crimped wire connectors, and proper battery voltage indicated, made the obvious and unnecessary starter swap. The starter swap didn't resolve the issue as similar dead acting vehicle event occurred about a week later post install, once I pulled terminals/cleaned again and attempted restart van fired right up. Deeming these high quality brass terminals necessary and budget friendly. Now van even with nearly all accessories, chargers, a/c, and fridge keeps the vehicle running at proper voltage.This is definitely a good purchase in my opinion.