Not Necessary to buy a TUNGSTONE TWICE IN A LIFE ‘TIME

Because Standardised and Interchangeable renewable Die Cast and Machine Pasted Plates PERPETUALLY replace a Set of Used Plates. Dry Plates partially first charged are ready for immediate use. Can be stocked for unlimited period in dry place. Spare Plates sold at reasonable prices with allowance of 4d. per lb. for returned disused plates. Anyone can quickly and easily slip a Set of New Plates into the Indestructible

Guaranteed Metal Containers in use.

FREE for the ASKING

Illustrated Battery Pocket Guide containing Special Articles on

MODERN BATTERY FAILURES

HIGH TENSION PLATES. EXCLUSIVE FEATURES NEVER BEFORE ACHIEVED BY ANY OTHER MAKER

Tungstone, with its two Perfectly Scientifically Balanced H.T. Plates, without Wood Separators, is far more efficient and steadier in working with assured longer life than when three unbalanced Plates are used necessitating Wood Separators. All Tungstone High Tension Plates are SCIENTIFICALLY BALANCED in correct weight proportions of the Grid and Pure Lead Paste, so that the Ampere Hour Capacity is evenly used up by an automatic proportional discharge of current from Positive and Negative Plates securinae’ steady voltage. No abrupt changes in the potential. The drop slow and imperceptible. No Wood Separators prevent Voltage fluctuations due to polarization and internal resistance which is negligible. No frothing or foaming. No Sulphation. No Parasitical Noises in Phones or Loud Speaker. No sudden Plate failure at a critical moment demanding Voltage adjustments. The respective Plates are Certain to get their required proportionate charge of current. If correctly first charged is a guarantee against uneven strain and irregular drain on Plates on Charge and Discharge, and there is no chance of a separate Cell discharging and reversing long before the

others. The loss of charge on standing is low and the local action small.

The open Circuit Voltage will give due warning of the approach of the Battery to a discharged state. As H.T. Cells are small it is difficult to test the Specific Gravity. Balanced Plates allow greater dependability to be placed on voltage readings. Cells are not permanently ruined by being left standing for months.

A FULL CHARGE IS ALWAYS SECURED IN SHORTER TIME AT LESS COST

All De Luxe H.T. 3 a.h. Tungstone Accumulators from 12 to any Volts are fitted with a Patent Charging Equipment whereby each series of 12 Volts can be coupled in parallel so that they can be charged to the full on a 12-16 Volt Charging Plant.

EASY TERMS OF PAYMENT.—Sold in U.K. on Monthly Payments extended over a period. Apply for particulars.

TUNGSTONE ACCUMULATOR CO., LTD., The Independent Battery of the British Empire, 3, St. Bride’s House, Salisbury Square, London, E.C.4.