USA
Catalog   /   Small Appliances   /   Beauty & Hygiene   /   Shavers

Comparison Philips Series 9000 S9711/31 vs Philips Series 9000 S9521/31

Add to comparison
Philips Series 9000 S9711/31
Philips Series 9000 S9521/31
Philips Series 9000 S9711/31Philips Series 9000 S9521/31
from $455.00
Outdated Product
from $325.16 up to $500.20
Outdated Product
TOP sellers
Main
SmartClean Plus system lets you clean, lubricate, dry and charge your shaver with one touch
Typerotaryrotary
Shaving
wet and dry /AquaTec/
wet and dry
Waterproof++
Nozzles
trimmer /SmartClick/
universal comb /5 installations/
trimmer
universal comb
Specs
Shaving heads / foil
3 pcs /V-Track Precision PRO/
3 pcs
Replacement nozzle modelSH90SH 90
Features
movable head / foil /8 destinations/
possibility of water rinsing
cleaning indicator
child lock
movable head / foil
possibility of water rinsing
cleaning indicator
child lock
In box
self-cleaning station /SmartClean Plus/
case
cleaning cartridge
self-cleaning station
case
 
Power source
Power supplybatterybattery
Battery typeLi-Ion
Operating time
60 min /20 shaves/
50 min
Charging time1 h1 h
Charge level indicator
Voltage switchingautomaticautomatic
General
Display
Color
Added to E-Catalogdecember 2014september 2014

Replacement nozzle model

Model of replacement head(s) compatible with electric shaver. This data will be useful primarily when looking for spare nozzles.

In box

Case. Cases include all kinds of rigid structures for storing a shaver. Cases in the form of handbags made of thick fabric also fall into this category. In addition to reliable storage of the device, they also elevate the model to the highest class. In more low-cost electric shavers, a much more primitive fabric case is included in the package.

Charging stand. A special stand on which the shaver can be installed to charge the batteries. There are no fundamental technical differences between such charging and charging from a power cord, the main difference is that the stand can also be used to store a shaver. Therefore, shavers with a charging stand are well suited for home use.

Wireless charging. A special stand that charges the shaver without a precise connection through the plug — just put the electric shaver on it and the battery pack will automatically start recharging. This saves the user the hassle of connecting wires and reduces wear on the connectors. On the other hand, such a function has a significant impact on the cost of the battle and increases the duration of the charging process itself, since the charging platforms themselves are made low-power for safety reasons.

Self-cleaning station. It is a special stand where the shaver is installed for automatic maintenance. This maintenance, as the...name suggests, primarily includes cleaning — the shaving unit is cleaned of hairs and dust - as well as charging the battery. In addition, self-cleaning systems can provide lubrication and disinfection of the shaving unit, but this function is less common and requires the use of consumables (oil and disinfectant).

— Facial brush. It is convenient to clean the face from the cut bristles with a brush. The brush that comes with an electric shaver usually has a medium bristle length. Some electric shavers are equipped with a universal brush, which is designed for both cleaning the face and combing the beard and mustache.

Battery type

— Li-Ion. Currently, the prevailing battery type is Lithium-ion (Li-Ion), known for its high energy density, compact size, and light weight. Li-Ion batteries offer approximately 400 charge-discharge cycles on average. These batteries exhibit minimal self-discharge and lack a significant "memory effect" (capacity reduction due to charging a partially drained battery). However, they are sensitive to cold temperatures and require high-quality charging currents.

— Li-pol. Lithium-polymer (Li-Pol) batteries maintain stable output voltage even during significant discharge. These batteries offer an average lifespan of about 800 charge-discharge cycles. Unlike some battery types, Li-Pol batteries don't exhibit a memory effect, and they operate reliably within a wide temperature range of -20 to +40°C. However, they are sensitive to deep discharge and overcharging. To address this, specialized chargers employing suitable power supply algorithms for the lithium polymer context are recommended for maintenance.

— Ni-Mh. Nickel-metal hydride (Ni-MH) batteries excel in managing substantial charge and discharge currents, making them suitable for power-demanding electric motors and rapid charging. These batteries now boast impressive longevity, enduring around 1000 to 1500 charge-discharge cycles, while maintaining an eco-friendly nature. In comparison to Li-Ion, Ni-MH batteries appear bulkier and add weight to the device, yet they offer a more economical option.

Operating time

The average runtime of electric shavers on a full battery charge, without recharging, is generally overestimated due to factors like hair length, density, and trimmer usage. Manufacturer claims for runtime tend to be higher than actual usage. Longer runtimes require heavier and more expensive powerful batteries. Most shavers offer around 45 minutes of runtime, while some models provide up to 1 hour or as low as 30 minutes of operation.

Display

The presence on the body of the shaver own display, which can display various service information. The display can be equipped with its own backlight. Its presence makes the use of the shaver more convenient, but significantly affects the price of the device.
Philips Series 9000 S9711/31 often compared
Philips Series 9000 S9521/31 often compared