| Description | Date | Identifier | |
| Order request for various types of battery clamp connectors from Messrs. Peto & Radford. | 23th Oct 1934 | Box 164 \ 4 img180 | |
| Letter from Falcon Accumulator Co. confirming the delivery and specifications of a 12-volt accumulator for testing. | 29th Oct 1934 | Box 164 \ 4 img181 | |
| Letter from The Chloride Electrical Storage Company regarding a request for spare copies of articles. | 10th Nov 1934 | Box 164 \ 4 img182 | |
| Request to order replacement 12 volt and 6 volt batteries for the experimental department. | 15th Nov 1934 | Box 164 \ 4 img183 | |
| Letter from Falcon Accumulator Co. following up on a 12-volt accumulator sent for testing. | 23th Nov 1934 | Box 164 \ 4 img184 | |
| Letter to Falcon Accumulator Co. regarding the testing schedule for a sample accumulator. | 26th Nov 1934 | Box 164 \ 4 img185 | |
| Standardisation of a new one-piece 12-volt battery in a moulded ebonite container. | 5th Nov 1934 | Box 164 \ 4 img186 | |
| Standardisation of parts document detailing a modification fitted to the first 'S' series chassis. | 26th Dec 1938 | Box 164 \ 4 img187 | |
| Requesting an order for a Dagenite accumulator for the new single cylinder test house. | 17th Dec 1934 | Box 164 \ 4 img188 | |
| Letter to Chloride Electrical Storage Co. Ltd. requesting a catalogue and recommendations for a specific aircraft battery. | 29th Jan 1935 | Box 164 \ 4 img189 | |
| Letter from The Chloride Electrical Storage Company regarding specifications for an aircraft battery. | 31th Jan 1935 | Box 164 \ 4 img190 | |
| Specification and price list for Exide accumulators for civil aircraft. | 4th Feb 1935 | Box 164 \ 4 img191 | |
| Letter from Runbaken Products concerning an 'Overnight' Battery Charger, its features, and pricing. | 4th Feb 1935 | Box 164 \ 4 img192 | |
| To order new experimental and standard batteries for the 40/50 chassis. | 22th Feb 1935 | Box 164 \ 4 img193 | |
| Requesting an order for replacement parts for the electrical laboratory battery. | 12th Mar 1935 | Box 164 \ 4 img194 | |
| Failed Exide type 636M battery and a request for a free replacement. | 26th Mar 1935 | Box 164 \ 4 img195 | |
| Arranging for the dispatch of a 12-volt wet accumulator, loaned for testing, to the Falcon Accumulator Co. | 1st Apr 1935 | Box 164 \ 4 img196 | |
| Letter informing Falcon Accumulator Co. of the negative results from testing their 12-volt battery. | 1st Apr 1935 | Box 164 \ 4 img197 | |
| Letter from Falcon Accumulators acknowledging receipt of an accumulator for examination. | 8th Apr 1935 | Box 164 \ 4 img198 | |
| Request for a suitable flat hydrometer and full charging instructions for new battery plates received from P and G Ltd. | 9th Apr 1935 | Box 164 \ 4 img199 | |
| Internal order for a flat hydrometer required for new Pritchett and Gold battery plates. | 10th Apr 1935 | Box 164 \ 4 img200 | |
| Non-conforming delivery of asbestos-covered compensating cable for pyrometry repairs. | 1st Apr 1935 | Box 164 \ 4 img201 | |
| Requesting the collection of acid carboys and scrap lead plates for return to a supplier. | 10th Apr 1935 | Box 164 \ 4 img202 | |
| Letter from an accumulator manufacturer regarding aircraft batteries sent for testing and a custom battery in a new Bentley. | 14th May 1935 | Box 164 \ 4 img203 | |
| Advertisement from W. D. Vick for rectifiers for all purposes, including electro-medical appliances. | 1st Jan 1935 | Box 164 \ 4 img204 | |
| Product page for various battery chargers, rectifiers, and conversion units. | 1st Jan 1935 | Box 164 \ 4 img205 | |
| Advertisement from W. D. Vick for fractional horse-power motors and appliance repairs. | 17th Jun 1935 | Box 164 \ 4 img206 | |
| Letter from W.D. Vick proposing their Car Owner Trickle Charger for Rolls and Bentley cars. | 17th Jun 1935 | Box 164 \ 4 img207 | |
| Letter from an accumulator manufacturer confirming arrangements for carrying out tests on various battery types. | 28th Jun 1935 | Box 164 \ 4 img208 | |
| Letter from Peto & Radford arranging a meeting to demonstrate a special battery. | 17th Sep 1935 | Box 164 \ 4 img209 | |
| Letter to Mr. Minchin of Messrs. Peto & Radford, Ltd., arranging a meeting to view a special battery. | 18th Sep 1935 | Box 164 \ 4 img210 | |
| Letter from Britannia Batteries Ltd. proposing the supply of alkaline type starter batteries. | 28th Oct 1935 | Box 164 \ 4 img211 | |
| Letter from Britannia Batteries Limited requesting figures on lead battery sizes and capacities. | 28th Oct 1935 | Box 164 \ 4 img212 | |
| Letter from a battery supplier regarding a free-of-cost replacement for a battery from the Experimental Department. | 30th Oct 1935 | Box 164 \ 4 img213 | |
| Letter to Brittania Batteries Ltd. declining their proposal for a 12-volt alkaline battery. | 1st Nov 1935 | Box 164 \ 4 img214 | |
| Internal order request for six type 'S' positive clamp battery connectors from Peto & Radford, Ltd. | 1st Nov 1935 | Box 164 \ 4 img215 | |
| Letter from Britannia Batteries detailing the specifications and dimensions of various German-made nickel-cadmium starter batteries. | 4th Nov 1935 | Box 164 \ 4 img216 | |
| Page two of a letter from Britannia Batteries Limited discussing the supply of lead-acid and nickel-cadmium batteries. | 4th Nov 1935 | Box 164 \ 4 img217 | |
| List comparing specifications and dimensions of Nickel Cadmium and Exide batteries. | 29th Nov 1935 | Box 164 \ 4 img218 | |
| Letter to Messrs. Everetts Holdings Ltd. requesting information and a sample of a new accumulator for testing. | 29th Nov 1935 | Box 164 \ 4 img219 | |
| Letter from Everett's Holdings Ltd. regarding a new design of accumulator. | 3rd Dec 1935 | Box 164 \ 4 img220 | |
| Letter from Peto & Radford to H.E. West arranging a meeting in Derby. | 9th Dec 1935 | Box 164 \ 4 img221 | |
| Letter to Messrs. Everett's Holdings, Ltd. regarding the dispatch and capacity of Dagenite type 6BGD9-S batteries. | 7th Jan 1936 | Box 164 \ 4 img222 | |
| Letter from Everett's Holdings Limited acknowledging correspondence regarding a battery change. | 8th Jan 1936 | Box 164 \ 4 img223 | |
| Dispatch instruction for a battery to be sent to Messrs. Everett's Holdings Limited. | 9th Jan 1936 | Box 164 \ 4 img224 | |
| Announcement regarding the amalgamation of Alklum Storage Batteries Ltd. and Ionic Alkaline Batteries Ltd. | 14th Feb 1936 | Box 164 \ 4 img225 | |
| Request to order three 2-volt cells from National Accumulator Co. Ltd. for testing purposes. | 14th Feb 1936 | Box 164 \ 4 img226 | |
| Letter from Air Associates regarding the features and availability of Reading aircraft batteries. | 26th Feb 1936 | Box 164 \ 4 img227 | |
| Letter from Air Associates, Inc. discussing aircraft battery hazards and referring to their UK representative. | 29th Feb 1936 | Box 164 \ 4 img228 | |
| Requesting the acquisition of a sulphuric acid pump for a battery charging station. | 29th Feb 1936 | Box 164 \ 4 img229 | |
| Letter from an accumulator manufacturer discussing battery size and weight considerations for cars fitted with radios. | 3rd Mar 1936 | Box 164 \ 4 img230 | |
| Letter discussing Exide batteries and the suggestion of using a trickle charger. | 3rd Mar 1936 | Box 164 \ 4 img231 | |
| Letter to Messrs. Peto & Radford Ltd. regarding the capacity of a lightweight battery on a Bentley and electrical system design. | 5th Mar 1936 | Box 164 \ 4 img232 | |
| The rough treatment and subsequent damage of duty batteries by shop fitters. | 5th Mar 1936 | Box 164 \ 4 img233 | |
| Letter from Peto & Radford regarding the supply and testing of various battery models. | 6th Mar 1936 | Box 164 \ 4 img234 | |
| Letter from R.A. Rothermel Ltd. regarding Reading Batteries and quoting prices. | 12th Mar 1936 | Box 164 \ 4 img235 | |
| Letter from Chloride Electrical Storage Company regarding a life test on starter batteries. | 17th Apr 1936 | Box 164 \ 4 img236 | |
| Table detailing plate sizes for various EXIDE and P and R batteries. | 26th May 1936 | Box 164 \ 4 img237 | |
| Letter to Chloride Electrical Storage Co. Ltd. discussing the weight of the new 6MXR9 battery. | 26th May 1936 | Box 164 \ 4 img238 | |
| Letter from accumulator manufacturers Peto & Radford regarding a schedule of battery plate sizes. | 3rd Jun 1936 | Box 164 \ 4 img239 | |
| Letter requesting a testing schedule for MXR type batteries from Exide & Drydex Batteries Co. Ltd. | 29th May 1936 | Box 164 \ 4 img240 | |
| Letter from The Chloride Electrical Storage Company providing a life test schedule for MXR battery cells. | 9th Jun 1936 | Box 164 \ 4 img241 | |
| Letter regarding a sample battery for testing as a substitute for a standard Bentley battery. | 9th Jun 1936 | Box 164 \ 4 img242 | |
| Letter from a battery supplier requesting further information on battery requirements. | 22th Jun 1936 | Box 164 \ 4 img243 | |
| Letter clarifying the battery discharge period for engine starting. | 23th Jun 1936 | Box 164 \ 4 img244 | |
| Letter from Chloride Electrical Storage Company regarding a small dry battery for emergency ignition service. | 24th Jun 1936 | Box 164 \ 4 img245 | |
| Letter from The Chloride Electrical Storage Company Limited detailing specifications for high tension batteries. | 25th Jun 1936 | Box 164 \ 4 img246 | |
| Letter to Chloride Electrical Storage Co. Ltd. requesting batteries for an experimental trial. | 25th Jun 1936 | Box 164 \ 4 img247 | |
| Letter from a battery supplier regarding sample cells and a modified battery unit for experimental trials. | 28th Jun 1936 | Box 164 \ 4 img248 | |
| Page 2 of a letter to H.E. West regarding no-charge samples provided for testing purposes. | 4th Sep 1936 | Box 164 \ 4 img249 | |
| Letter from a battery manufacturer concerning the electrical discharge and battery size on a Phantom III. | 4th Sep 1936 | Box 164 \ 4 img250 | |
| Letter replying to a customer about the Phantom III and its battery/dynamo system. | 8th Sep 1936 | Box 164 \ 4 img251 | |
| Inquiry to Chloride Electrical Storage Co. Ltd. regarding a new type of battery with glass separators mentioned in an I.A.E. Research Abstract. | 2nd Oct 1936 | Box 164 \ 4 img252 | |
| Letter inquiring about a new type of battery developed in the U.S.A. featuring glass separators. | 2nd Oct 1936 | Box 164 \ 4 img253 | |
| Standardisation of parts report for lightweight batteries to reduce weight. | 22th Sep 1936 | Box 164 \ 4 img254 | |
| Letter to Joseph Lucas Ltd. inquiring about the use of positive earth electrical systems in American and English cars. | 2nd Oct 1936 | Box 164 \ 4 img255 | |
| Letter from The Chloride Electrical Storage Company regarding battery design principles, specifically the 'Kathanode principle' and materials. | 3rd Oct 1936 | Box 164 \ 4 img256 | |
| Letter from Joseph Lucas Limited discussing the practice of positive versus negative earth systems in American and English cars. | 5th Oct 1936 | Box 164 \ 4 img257 | |
| Letter to Exide Works discussing battery developments, including glass wool separators and 'Duprene' rubber covers. | 5th Oct 1936 | Box 164 \ 4 img258 | |
| Letter from The Chloride Electrical Storage Company Limited discussing tests on glass wool separation and the oil resistance of soft rubber. | 6th Oct 1936 | Box 164 \ 4 img259 | |
| Required modifications to vehicle electrical systems for earthing the positive battery terminal. | 8th Oct 1936 | Box 164 \ 4 img260 | |
| Letter concerning the technical advantages of different battery separation materials, specifically Kathanode batteries. | 9th Oct 1936 | Box 164 \ 4 img261 | |
| Letter from an accumulator manufacturer discussing the use of glass wool separation versus wood and ebonite. | 12th Oct 1936 | Box 164 \ 4 img262 | |
| The standardization of a new lightened battery for a Bentley Chassis. | 13th Oct 1936 | Box 164 \ 4 img263 | |
| Letter from Peto & Radford discussing the use and design of glass wool separation in accumulators. | 23th Oct 1936 | Box 164 \ 4 img264 | |
| Letter discussing battery separator materials like wood, ebonite, and glass wool for R.A.F. use. | 24th Oct 1936 | Box 164 \ 4 img265 | |
| Letter to Peto & Radford Ltd. regarding reversing battery polarity and preventing corrosion. | 24th Oct 1936 | Box 164 \ 4 img266 | |
| Inquiry to a battery manufacturer regarding changes to prevent corrosion due to reversing battery polarity. | 24th Oct 1936 | Box 164 \ 4 img267 | |
| Request to remove an experimental battery from vehicle 21-G-IV and return it to the Laboratory. | 26th Oct 1936 | Box 164 \ 4 img268 | |
| Standardisation and use of thin plate batteries in various vehicle models. | 28th Oct 1936 | Box 164 \ 4 img269 | |
| Performance figures and the cost benefits of improved cold starting with thin plate type components. | 22th Apr 1936 | Box 164 \ 4 img270 | |
| Implications and proposed actions regarding the earthing of the battery positive terminal. | 28th Oct 1936 | Box 164 \ 4 img271 | |
| Standardisation and use of thin plate batteries in various car models. | 28th Oct 1936 | Box 164 \ 4 img272 | |
| Sheet 2 of a memo discussing minimum performance figures and the cost-effectiveness of a thin plate type part. | 28th Oct 1936 | Box 164 \ 4 img273 | |
| Investigation and proposed modifications for earthing the battery positive terminal. | 28th Oct 1936 | Box 164 \ 4 img274 | |
| Letter from Peto & Radford discussing battery bolt corrosion and earthing systems. | 29th Oct 1936 | Box 164 \ 4 img275 | |
| Letter to Exide & Drydex Ltd. asking if the 81 cycle life of their battery is a normal result. | 30th Oct 1936 | Box 164 \ 4 img276 | |
| Letter to Peto & Radford Ltd. regarding the results of a P. & R. battery life test. | 30th Oct 1936 | Box 164 \ 4 img277 | |
| Letter from the Chloride Electrical Storage Company regarding the abnormal life cycle of an Exide battery. | 2nd Nov 1936 | Box 164 \ 4 img278 | |
| Test report comparing the performance, dimensions, and weight of Dagenite and Exide batteries. | 2nd Nov 1936 | Box 164 \ 4 img279 | |
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