TESA LTD

Battery Usage Hints

General Instructions for Users
Spent batteries must be removed immediately, and all cells in battery should be changed at the same time since there is a danger of leakage with discharged cells if they are connected with fresh ones. The battery's correct polarity (+/-) must be observed when fitting. Only batteries of the same electro-chemical couple (eg. black or gold, etc), should be fitted together since there are differences in performance with the various battery types. If batteries of unequal performance are fitted together, the weaker battery will be discharged more rapidly thus increasing the danger of leakage.

IT IS VERY IMPORTANT TO NOTE that most battery types are not rechargeable. However, if non-rechargeable batteries are charged inadvertently, the evolution of gas can be observed with the possibility of cell rupture occurring.

There is a danger of cell rupture if used cells are incinerated.

TESA and VARTA cannot accept any liability for products damaged by misuse.

Over-discharge causes a pressure build-up in batteries; it can be caused if, for example, appliances remain in operation with current being extracted from the battery even though it has dropped below the recommended voltage cutoff point. This can also be observed when mixing used cells with fresh ones, or when applying batteries of different quality, causing inevitable side effects in the battery with electrolyte leakage.

Battery-operated products must always be switched off when not in use. The batteries should be removed if the product is not to be used for a long period, and replaced with fresh ones when the product is next used.

When to exchange Batteries?
Batteries should be exchanged if there is a considerable reduction in performance, ie. the product no longer functions. This can be illustrated with various products, as follows:-

Pocket calculators	If the LCD-display is slow acting or becomes darker.
Portable radios	if there is a considerable decrease in volume when the volumn control remains on the same setting. Also if there is a distortion of the sound at full volume, or if ther receiver loses its sensitivity.
Tape recorders	If the battery display drops into the negative range after a short operation of if the pitch variations can be observed.
Electronic photographic flash equipment	if there in no "Flash" or a prolonged period of recharging.
Film cameras	if the battery test displays a low voltages.
Flash bulbs	if there is no ignition.
Watches	if, depending on the system, there is either a function failure or a consideration decrease in accuracy.
LCD	if the display is slow-acting or if there is a decrease in light intensity.
Torches	if there is a noticeable reduction in brightness.
Warning lights	if there is a testing device which does not flash at testing position or if the light goes off.
Hearing aids	if the volume required can no longer be controlled.

Accidents with Batteries
The most common accident with batteries is with childen swallowing button cells. The cell type cannot usually be determined quickly enough after the cell has been swallowed and therefore possible consequences due to cell contents are difficult to estimate. In any event, a doctor must be consulted immediately. No time must be lost in seeking effective medical aid; self help actions should be avoided. Generally a surgeon will act immediately after having taken an X-ray, in order to remove the button cell before digestion starts. If at all possible, the button cell should be removed in an undamaged state.

Disposal of Batteries
Increased environmental consciousness at all levels must be promoted.