# Best Car Battery Chargers and Maintainers Tested

> Road & Track tests top battery maintainers for cars in storage.
- Title: Best Car Battery Chargers and Maintainers Tested | Shortify
- Summary: Road & Track tests top battery maintainers for cars in storage. Road & Track tested battery maintainers to keep cars charged during long storage periods.
- Keywords: battery tender, noco genius10, ctek multi us 7002, car battery, battery maintainer, car storage, battery charger, vehicle maintenance, cars, sports, Best, Car
- Source: Road & Track — https://roadandtrack.com/gear/g64408894/best-car-battery-maintainers-tested
- Author: Justin Helton
- Published: 2026-10-16T14:31:00+00:00
- Read time: 1 min
- Topics: battery tender, noco genius10, ctek multi us 7002, car battery, battery maintainer, car storage, battery charger, vehicle maintenance, cars, sports
## Problem with car batteries
A car battery loses charge when parked long enough even with maintenance.
## Battery maintainer purpose
A battery maintainer keeps a battery charged without overcharging risk.
## Top pick: Battery Tender 15 Amp
Battery Tender 15 Amp is easiest to use with LCD display and 10-year warranty.
## Easiest to use: Noco Genius10
Noco Genius10 works with lithium-ion batteries and repairs sulfated batteries.
## Best for reconditioning: CTEK Multi US 7002
CTEK Multi US 7002 reconditions stratified batteries with eight-step charging curve.
## Other battery maintainers
Additional maintainers include Noco Genius1, Battery Tender Plus 4 Bank Plus, Foxwell BC521, and Bosch C80-Li.
## Key features for battery maintainers
Smart-charging technology, amperage rating, and safety features are crucial for battery maintainers.
## Battery types
Flooded lead-acid, AGM, gel cell, and lithium-ion batteries each require specific maintainers.
## How we tested
Road & Track tested maintainers on three vehicles parked for extended periods.
## Expert opinion
Gregory Coe says managing a car collection is like taking care of a living organism.
## Why trust us
Road & Track uses hands-on testing and editorial independence for product recommendations.
## Tested vehicles
Road & Track tested a Lincoln Continental, Triumph Spitfire, and Dodge Raider in storage.
## Battery types explained
Flooded lead-acid batteries require topping off with water, AGM batteries are sealed and spill-proof.
## How we chose maintainers
Road & Track selected maintainers from Battery Tender, NOCO, and CTEK for testing.
## Expert consulted
Gregory Coe is a marketing director for 1600 Veloce and automotive collector.
## What happens next
Road & Track will update long-term testing results for battery maintainers.
## Key takeaway

Road & Track tested battery maintainers to keep cars charged during long storage periods.