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Battery & Electrical

Keeping a battery alive through storage, and getting going when it isn't.

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Car Electrical Problems, in the Order to Check Them

Most dead batteries are not dead batteries. Connections, drains and charging faults look identical from the driver's seat and are separated by cheap tests.

Collection

The Car You Do Not Drive Enough

Five things that answer different questions about the same battery: is it charged, is it holding, is it finished, is something draining it, and will you bother.

4 min read
Comparison

Battery Maintainer vs Solar Maintainer

A mains maintainer knows what the battery needs. A solar panel knows what the weather is doing. Where the car is parked decides which of those matters more.

4 min read
Guide

The 12 V Battery in an Electric Car

The traction pack can be full and the car still dead. There is an ordinary little battery in there, it fails the ordinary way, and almost nobody checks it.

4 min read
Guide

The Battery Hold-Down Nobody Refits

A battery that moves destroys itself and everything it touches. The hold-down is the cheapest part on the car and the one most often left in a drawer.

6 min read
Guide

Split Conduit and Wire Loom

Loom is what stops a wire chafing through against a bracket. It is also what hides a fault for years if the wrong kind goes in the wrong place.

5 min read
Comparison

Solder-Seal Connectors vs Crimp

One seals in a single step and hides its own failure. The other needs a tool and lets you prove the joint before you close it up. That is the whole trade.

4 min read
Guide

Inline Fuse Holders for Car Accessories

The fuse protects the wire, not the device. That one sentence decides where it goes and what rating it takes, and most bad installs get it backwards.

5 min read
Guide

Replacing a Corroded Earth Strap

A bad return path imitates a dozen other faults, and every one of them costs more to replace. How to test the ground before you suspect anything expensive.

4 min read
Guide

How to Repair a Broken Car Wire Properly

Twist-and-tape fails from the inside out as moisture wicks along the copper — a crimped, sealed joint is the difference between a fix and a future fault.

3 min read
Comparison

Battery Tester vs Bluetooth Monitor

A tester answers 'will it start today'; a monitor answers 'is something draining it over weeks'. Different questions, bought off the same shelf.

4 min read
Guide

Should You Fit a Battery Disconnect Switch?

A knob cutting the negative terminal stops parasitic drain and deters theft. What it does not stop, the amp rating to check, and the rule that saves the ECU.

5 min read
Comparison

CTEK MXS 5.0 vs NOCO GENIUS1

4.3A against 1A, 110Ah against 30Ah, and one of them does 6V. A charger and a maintainer compared on the specifications that actually decide it.

7 min read
Review

NOCO GENIUS1 Review: Maintainer, Not Charger

NOCO rates it to charge batteries up to 30Ah but maintain any size. That one line tells you what this 1A unit is really for — and where it stops.

5 min read

Fix 8 · Ugly 4

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