Battery and Charger Kit - Ryobi, RC18120A-250, 2 x ONE+ 18 V 5.0 Ah Batteries and Charger - 5133006919

Ryobi RC18120A-250 Battery and Charger Kit: 2 x ONE+ 18 V 5.0 Ah Batteries and RC18120A Charger

Ryobi RC18120A-250 (article 5133006919) is the power pack for the ONE+ 18 V platform: two Lithium+ 5.0 Ah batteries and a 2.0 A RC18120A charger. The manufacturer's own designation is 18V ONE+ Lithium+ 2 x 5.0Ah Battery & 2.0A Charger Kit. It is meant for anyone who already owns a ONE+ machine and needs energy for it, and for anyone buying a machine supplied without a battery.

Important: this kit contains NO tool. You receive the two battery packs and the charger, nothing else. Drills, saws, angle grinders and any other machines are not part of the kit and are bought separately. We state it plainly so there is no misunderstanding when you order.

The ONE+ 18 V platform

ONE+ is one and the same battery across more than 200 cordless Ryobi machines - for the home, the garden, the car and the workshop. Every ONE+ 18 V battery fits every ONE+ machine, regardless of the year the machine was built. That is exactly why most ONE+ machines are also offered as a bare tool - carrying the suffix -0 or the words SOLO / body in the name. Such a machine ships as the body alone, with no battery and no charger, and this kit is the missing half that goes with it.

The Lithium+ 5.0 Ah batteries

5.0 Ah is one of the larger packs in the ONE+ range - the capacity you reach for when the load is sustained: circular saws, reciprocating saws, angle grinders, garden machines, vacuums. Two batteries give a combined 10 Ah of stored energy, which in practice means one pack works while the other charges and the job does not stop.

Lithium+ technology delivers more power, longer run-times and better durability than earlier Ryobi lithium technologies. IntelliCell monitors and balances each cell individually, which extends the life of the pack, protects it in storage and improves safety. Each battery carries a four-stage fuel gauge - 100%, 75%, 50% and 25% - so the remaining charge can be read without fitting the pack to a machine. The housing has built-in impact protection.

The manufacturer publishes two real-world figures for a single 5.0 Ah pack: up to 1550 screws of 4x32 mm driven with the R18DD3 drill driver, and up to 100 metres of 13 mm plywood cut with the R18CS circular saw. Run-time varies with the tool, the battery and the application.

The RC18120A charger

RC18120A is a compact fast charger with a charge rate of 2.0 A. According to the manufacturer it brings a 2.0 Ah battery to 80% in one hour. The charger is compatible with all ONE+ 18 V lithium-ion batteries, including earlier packs from the platform.

While charging, intelligent condition monitoring is at work: the charger evaluates the voltage and the temperature of the pack and adapts the process to them instead of pushing full current at it. That is what preserves battery capacity over the long term. Indicator lights show the status both while the batteries are being charged and while they are being maintained, and a separate "Ready to go" indicator lights up once the battery has reached 80% - that is, once it is usable without waiting out the full cycle.

Charging time

For a 5.0 Ah battery on this charger the manufacturer's specification for this article gives approximately 145 minutes for a full cycle. With two batteries in the kit that time is barely felt: while one sits on the charger, you work with the other. The figures are approximate and depend on the starting charge and on the temperature of the pack.

Who the kit is for

This is the obvious first purchase for anyone entering the ONE+ system through a bare-tool machine, and the obvious upgrade for anyone already using ONE+ who is tired of waiting for a charge. It also serves as a reserve for a workshop running several ONE+ machines, where one battery will not cover a full day. If you mostly use light hand-held machines in short bursts, the more compact 2.0 or 2.5 Ah packs are easier on the wrist; 5.0 Ah is what you take where the load is constant.

Technical specifications

What's in the box

• 2 x ONE+ 18 V, 5.0 Ah Lithium+ battery pack, each with a four-stage fuel gauge
• 1 x RC18120A, 2.0 A charger for all ONE+ 18 V lithium-ion batteries
• No machine is included - no drill, saw, angle grinder or any other tool is part of the kit
• No case or bag is included

Questions and Answers