Buying guides
What to actually buy for home electrical and energy work. Every pick is grouped by the question it answers, with the trade-offs stated plainly — including who should not buy it.
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Electrical Testers
The testers worth owning for home electrical work — non-contact voltage pens, outlet testers, clamp meters and multimeters — and which one actually answers your question.
7 picksSurge Protectors
Panel-mounted Type 2 SPDs, service-entrance Type 1 units and the point-of-use layer — compared on the numbers that matter: VPR, surge current rating and what the warranty actually requires.
6 picksEV Chargers
Hardwired, plug-in and portable Level 2 chargers compared on output, connector, enclosure rating, load management and warranty — with the NACS transition and tight-panel options explained.
10 picksOutlets
Spec-grade duplexes, self-test GFCIs, USB-C receptacles and EV-rated NEMA 14-50s — where a few extra dollars per device buys contacts that stay tight for decades.
5 picksEV Accessories
Outlet splitters, load-management devices and charging adapters — the hardware that solves real installation problems: no spare panel capacity, one outlet and two loads, or the wrong connector.
6 picksPower Stations
Battery power stations from small camping units to whole-circuit home backup — compared on capacity, output, chemistry, cycle life and recharge options, with the sizing math to pick one that actually runs your loads.
9 picksEnergy Monitors
The two ways to measure what an appliance really costs to run — a plug-in meter for anything with a cord, a whole-home monitor for hardwired and 240 V circuits — and which one answers your question.
2 picksOutage Safety
The kit that stops a power outage turning dangerous — battery CO alarms, properly rated cords, a transfer switch that makes backfeeding impossible — plus the inlet box, 30 A cord, bonding plug and fuel stabilizer that finish the hookup and keep the generator starting.
8 picksInverter Generators
Portable inverter generators from 1,800 to 9,000 running watts — compared on running watts per fuel, 120 V vs 240 V outlets, CO auto-shutoff, parallel capability and run time, with the sizing math to pick the right class.
6 picksOBD-II Adapters
The Bluetooth OBD-II adapters that battery-reading apps actually support, which ones work with an iPhone, and how to use one on a used EV before you buy.
3 picksAir Quality Monitors
The instruments that tell you why a house feels stuffy, damp or dry — a true NDIR CO2 monitor, a logging hygrometer, and a multi-sensor monitor for cooking particulates and radon — and what each one cannot detect.
3 picks12 V Battery Tools
A flat 12-volt battery strands an EV with a full traction pack and stops an electric-start generator during an outage. Here are the jump packs and maintainers that fix and prevent it, and the battery-chemistry check to make before you buy.
4 picks