13/01/2011

www.bosch-do-it.co.uk
PSR 14.4 LI-2 - Lithium-ion Cordless T

PSR 14.4 LI-2

Lithium-ion Cordless Two-Speed Drill/Driver
Lithium-ion technology Lightweight and powerful for all screwdriving work with drill setting 2speed gearbox
No memory effect, no self-discharge: always ready for use thanks to lithium-ion technology Particularly long life of the replaceable lithium-ion battery packs due to Bosch Electronic Cell Protection (ECP) The charging station that comes complete with the tool charges the battery on its own or together with the tool
Lithium-ion quick-change battery pack

2-speed gears

Auto-Lock keyless chuck
Intelligent 3-stage charge level indicator Bosch Electronic speed control: accelerate from 0 max. using the trigger switch 2-speed high-performance planetary gears: superior lifetime, best power transfer, high running smoothness Keyless chuck with Bosch Auto-Lock for the fastest and easiest tool changes PowerLight thanks to the built-in LED, your workpiece is always well lit and clearly visible Torque preselection with 25 torque settings plus a drill setting optimum power for every application

Part no. 956 T74

Li-Ion charging station (225 474) Battery pack (336 206) Screwdriver bit Plastic case (438 623)

Technical data

Idle speed (1st gear/2nd gear) Max. torque for soft/hard screwdriving applications

/ 1.150 rpm 20 / 38 Nm

bosch-do-it.co.uk//Product.jsp;jsessi
13/01/2011 Torque settings Battery voltage Chucks Machine weight with battery Screw diameter Screw diameter up to Drilling diameter Drill diameter in steel Drill diameter in wood

Functions

PSR 14.4 LI-2 - Lithium-ion Cordless T 25 + 1 14,4 V Keyless chuck 1,35 kg

8 mm 10 mm 30 mm

14.4 Volt Lithium-ion technology Bosch Electronic Cell Protection (ECP) Bosch Auto-Lock 2-speed gearbox Application: screwdriving / drilling Softgrip Integrated work light Bosch Electronic Forward/reverse rotation Charge level indicator Forward/reverse indicator
Noise/vibration information
Show values Measured values determined according to EN 60745. Total vibration values (vector sum of three directions) Drilling in metal Vibration emission value ah 2,5 m/s Uncertainty K 1,0 m/s Screwdriving Vibration emission value ah 2,5 m/s Uncertainty K 1,0 m/s The A-rated noise level of the power tool is typically as follows: Sound pressure level 70 dB(A); Sound power level 80 dB(A). Uncertainty K= 3 dB.
We recommend the following accessories for this product

40-piece X-Line set

30-piece X-Line set Titanium

86-piece X-Line set

54-piece X-Line set

CORDLESS

Best Buy drills for the odd job and more advanced DIY projects, plus our experts top ten drilling tips

How we test

We test drills endurance by drilling and screwdriving in wood and metal for around 33 hours. This is the equivalent of about ten years of DIY use.

Hidden drill costs

Ryobis One+ tool range shares batteries and chargers, so the drills are often sold without them. The CDI 1803M is 93 for the drill only, while the other Ryobi prices are for packages.

Drilling tips video

test lab

DRILLS

DIY expert Roger Bisby from www. selfbuilder.net demonstrates his top ten tips for drilling in our new video. Go to www.which. co.uk/drillingtips to see Roger in action.

COMBINATION DRILL

Bosch Psb 18 Li-2 136
Which? test score 77% PROS This Bosch is easy to use, excellent when drilling through sandstone and wood and pretty good when put to work against metal. Its also excellent when driving screws into pine and steel. Its reasonable when hammer-drilling concrete and excellent when screwdriving. CONS Only comes with one battery two would be more helpful when DIYing. Which.co.uk target online price 97 Cheapest high street store B&Q Also available Argos, Axminster, Homebase, online and independents

Ryobi Cdi 1803M One+ 93

Which? test score 77% PROS Hammer-drilling through concrete is outstanding with this Ryobi, as is rotary drilling through sandstone and wood. Drilling metal is good and screwdriving is excellent through metal and wood. CONS At close to 3kg, the Ryobi is around 1kg heavier than average. Batteries and a charger are sold separately and cost around 130. Which.co.uk target online price 82 Cheapest high street store Screwfix Also available Amazon, B&Q, online and independents

HITACHI DV18DSL 300

Which? test score 76% PROS Outstanding battery life means that in our tests we were able to drill over 100 holes in sandstone on a full charge. Rotary drilling and screwdriving are impressive. Its also good at drilling holes in steel. At 1.85kg, its more than 1kg lighter than the Ryobi CDI 1803M One+. CONS This Hitachi doesnt come cheap and hammer-drilling is only reasonable. Which.co.uk target online price 240 Cheapest high street store Screwfix Also available B&Q, online and independents

DRILL DRIVER

TOP 10 DRILLING TIPS
Black & Decker is one of the biggest names in DIY, but our new cordless drills test has revealed that one of its combination drills cant handle concrete as well as many other models can, and its drill driver scored the lowest of all those we tested. In our tests, we tried to drill 50mm-deep holes in concrete with four different sizes of drill bit. The Black & Decker EPC188 hardly broke the surface three out of our four drill bits only managed to drill 3mm down, while the fourth stopped at 8mm. The Bosch PSR 14.4 Li and the PSR 10.8 Li drill drivers also failed to impress drilling speeds are too low. By contrast, the Best Buy Ryobi CDI 1803M One+ (93) was powerful enough to drill deep holes in concrete and was quicker than any other drill we tested. Hundreds of you contacted us asking us to test cordless power drills. In response, weve tested combination drills, and drill drivers from leading brands for this issue of Which?.

expert VIEW

Before drilling, check for pipes and cables.
Above, below and either side of a switch or socket are no-go areas. Check battery/charger costs if they arent included with your drill they can be more than you paid for the whole kit. On hard materials, stop the bit overheating by regularly withdrawing. When drilling downwards, pull the drill out regularly to clear dust and prevent jamming. Dont plunge tungsten tipped bits into water to cool them it cracks the weld. Most brickwork can be drilled with a rotary bit without hammer action. Choose the right drill bit for the job. Dont select hammer action for rotary bits. Avoid cheap drill bits they could cause your drill to work harder than it should. If the drill starts to smell hot, remove it from the hole and run it full speed to cool the motor.

hammer harder

You wont need an electric screwdriver with a Best Buy cordless drill all of our Best Buys can handle this task. Combination drills have a hammer action for penetrating hard, dense surfaces and also offer rotary drilling and screwdriving. Drill drivers dont have the hammer action. If you only need a drill for hanging pictures or assembling furniture, a drill driver will be fine (Best Buys start at 93 without battery/charger). But if you think you might end up drilling outside, go for a combination drill the hammer action will help to puncture harder surfaces like concrete fence posts or paving slabs. Youll find a selection of the best and worst scoring drills weve tested in the table on p50.

RYOBI LCDI 18022 One+ 165
Which? test score 76% PROS Rotary drilling into sandstone and wood is excellent and drilling in metal is good. You get reasonable results when hammer drilling concrete. Its very easy to use and quickly drove home all of our test screws to the required depths, even with the largest screws. CONS The LCDI 18022 One+ is not as good at drilling through concrete in hammer mode as the CDI 1803M. Which.co.uk target online price 165 Cheapest high street store n/a Also available online and independents

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photographY by: piotr gregorczyk, john trenholm

AEG BSB18GLi 95

Which? test score 74% PROS Rotary drilling is excellent, particularly when drilling through sandstone and wood. Metal drilling is good and its reasonable when using the hammer function to drill concrete. Its excellent when driving screws home quickly and effectively into wood and it also does a great job with steel. CONS The battery life for the AEG BSB18GLI is a little on the low side for a Li-ion battery. Which.co.uk target online price 95 Cheapest high street store n/a Also available online and independents

MAKITA BDF 343rh 140

Which? test score 79% PROS This drill driver does a great job of rotary drilling in sandstone, is good in wood and reasonable in metal. Its also good in screwdriving mode on test, all of the screws were driven in to the required depths and it managed this quickly. CONS Battery life is on the low side in our tests we drilled 40 holes the Hitachi DV18DSL managed 111. Which.co.uk target online price 140 Cheapest high street store n/a Also available online and independents

May 2011 | 49

more For our full cordless drills review go to www.which.co.uk/drills. Here youll for find details of the 22 drills weve tested, including all 11 Best Buys. Alternatively, for help with you choosing the right one for you, call us on (Mon-Fri 8.30am-6pm, Sat 9am-1pm).

48 | May 2011

ROGER BISBY
DIY and drills expert www.selfbuilder.net

Battery life

The Hitachi DV18DSL can sink 111 holes on a full charge and 34 after a quick charge. The Black & Decker EPC 14 only manages 32 on a full-charge and just one after a quick charge.

Battery types

Lithium-ion (Li-ion) batteries are becoming more common and provide the best energy storage available for cordless drills versus Nickel Cadmium (NiCd) batteries.

Torque settings

The torque setting needed depends on the surface youre driving screws into. Get the setting right, and the drill will stop when the screw is flush with the surface.
RYOBI LCD 18022B One+ 150
Which? test score 79% PROS This Ryobi drill driver is a good all-rounder all drilling results were impressive and screwdriving is excellent. Its easy to use. CONS There are other Best Buy drills with larger battery capacities. Which.co.uk target online price 150 Cheapest high street store B&Q, Screwfix Also available online and independents

Specification

METABO BS14.4 LT 260
Which? test score 77% PROS Drilling in sandstone is a strength and this Metabo is also good when put to work against wood and metal. Its good in screwdriver mode as well. CONS Battery life could be better. Which.co.uk target online price 260 Cheapest high street store n/a Also available online and independents

METABO BS18 Li 200

Which? test score 77% PROS This Metabo drill driver is excellent when drilling sandstone and good with wood and metal. Screwdriving is also good. CONS The Hitachi DV18DSL drills more holes on a full charge. Which.co.uk target online price 200 Cheapest high street store n/a Also available online and independents

Which? Test Performance

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Combination Drills 1 Bosch PSB 18 Li-Ryobi CDI 1803M One+ (drill only) 3 Hitachi DV18DSL 4 Ryobi LCDI 18022 One+ 5 AEG BSB18GLi 6 Black & Decker EPC188 Drill Drivers 7 Makita BDF 343RH 8 Ryobi LCD 18022B One+ 9 Metabo BS14.4 LT 10 Metabo BS18 Li 11 Bosch PSR 14.4 Li 12 Black & Decker EPCBosch PSR 10.8 Li 14 Black & Decker EPC55 14.14.14.10.8 14.4 1.4 1.1.6 1.2 1.1.1 Li-ion Li-ion Li-ion Li-ion Li-ion NiCd Li-ion NiCd n/a n/a n/a n/a n/a n/a n/a n/a HHHHH HHHH HHHH HHHH HHH HHHH HHH HHH HHHHH HHHHH HHHHH HHHHH 48 HHHH HHHHH HHHH H HH H HH HHHH HHHH HHH HHHH HHH 1.1.1.9 1.2 Li-ion NiCd Li-ion Li-ion Li-ion NiCd HHH HHH HHH HHH H HHHHH HHHHH HHHH HHHHH HHHHH HHHHH HHHH HHHHH HHHH HH HHHH HHHHH HHHHH HHHH HHH HHH HHH HHHHH HHHH HHHHH HHH HHHHH HHHHH HHHHH HHHH HHHHH
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test ratings for 22 power drills can be accessed on our members website at www.which.co.uk/drills

Using the table

Price see p25

Test performance

Hammer drilling We drill 50mm holes in
concrete with different sized drill bits. holes deep enough and drilled quickly, drill couldnt penetrate concrete. Sandstone, wood and metal drilling We drill 30mm holes in sandstone, 40mm holes in wood and 5mm holes in steel all with 6mm drill bits. Screwdriving We screw three
different sizes of screws into wood, and one size into steel. Endurance Drills on test simulate ten years of use by repeatedly drilling and screwdriving. Ease of use A DIY expert panel assess how easy it is to handle the drills and carry out work, as well as charge and change the batteries.
Ignores price and is based on: Drilling 30% Ease of use 30% Screwdriving 20% Battery life10% Endurance10%

50 | May 2011