| Description | Date | Identifier | |
| The testing of a new sample of Arcanol Paint for battery boxes after the original failed. | 13th May 1932 | Box 164 \ 4 img080 | |
| Effectiveness of 'Rozalex' skin protection compound. | 8th Jun 1932 | Box 164 \ 4 img081 | |
| The trial of the protective cream 'Rozalex' for preventing and healing sores. | 3rd Jun 1932 | Box 164 \ 4 img082 | |
| Potential testing of cells from The Young Accumulator Co. | 13th Jun 1932 | Box 164 \ 4 img083 | |
| The testing and poor performance of Young accumulators compared to standard batteries. | 16th Jun 1932 | Box 164 \ 4 img084 | |
| Request to obtain one standard chassis battery Exide hydrometer from the Chloride Electrical Storage Co. | 7th Jun 1932 | Box 164 \ 4 img085 | |
| Letter to The National Accumulator Co. Ltd. regarding the production of battery plates for the Bentley Sports Chassis. | 27th Aug 1932 | Box 164 \ 4 img086 | |
| Inquiry to the National Accumulator Co about modifying a battery for a Bentley Sports car. | 20th Aug 1932 | Box 164 \ 4 img087 | |
| Letter to a battery company inquiring about modifying an Exide battery for a Bentley Sports car. | 20th Aug 1932 | Box 164 \ 4 img088 | |
| Order for various types of batteries for the 'Peregrine II' chassis. | 2nd Sep 1932 | Box 164 \ 4 img089 | |
| On the advisability of fitting French accessories to chassis for the French market to reduce costs and bypass import restrictions. | 29th Nov 1932 | Box 164 \ 4 img090 | |
| Inquiry to The Chloride Electrical Storage Co. Ltd. about their French representatives and manufacturers for Exide batteries. | 30th Nov 1932 | Box 164 \ 4 img091 | |
| Letter from Chloride Electrical Storage Co. regarding their Paris Depot and forwarding an issue to their London Export Department. | 1st Dec 1932 | Box 164 \ 4 img092 | |
| Possibility of supplying French batteries for cars supplied to French owners. | 2nd Dec 1932 | Box 164 \ 4 img093 | |
| Letter from Exide Batteries regarding temporary arrangements for supplying batteries to Paris due to an import quota. | 3rd Dec 1932 | Box 164 \ 4 img094 | |
| Battery requirements and specifications for French chassis. | 7th Dec 1932 | Box 164 \ 4 img095 | |
| Letter discussing the specifications, pricing, and suitability of a Slem battery for the French Phantom II chassis. | 19th Dec 1932 | Box 164 \ 4 img096 | |
| From Sèvres to Derby regarding the preparation and quality testing of a SIEM battery for the French Phantom II chassis. | 31th Dec 1932 | Box 164 \ 4 img097 | |
| Request for a 6 volt French battery unit for testing. | 2nd Jan 1933 | Box 164 \ 4 img098 | |
| Letter confirming the dispatch of a Slem Battery by Anglo Parisian Automobiles Ltd. and the necessary customs deposit. | 9th Jan 1933 | Box 164 \ 4 img099 | |
| Correspondence regarding a replacement Slem battery for the French 20/25 HP chassis to replace the standard EXIDE battery. | 2nd Feb 1933 | Box 164 \ 4 img100 | |
| Requesting a battery from Slem Battery Co. for testing on a French 20/25 HP chassis. | 7th Feb 1933 | Box 164 \ 4 img101 | |
| Re-export of a Slem Battery from France to reclaim duty charges. | 11th Feb 1933 | Box 164 \ 4 img102 | |
| Decision to keep Accuslem batteries and pay the import duty due to test completion delays. | 13th Feb 1933 | Box 164 \ 4 img103 | |
| Test figures for a Westric Charger Type 12V.1A, showing current output at various tappings for discharged and charged batteries. | 3rd Apr 1933 | Box 164 \ 4 img104 | |
| Letter from Sèvres requesting an opinion on 'SLEM' batteries sent for quality testing for 20/25 HP and Phantom II chassis. | 1st May 1933 | Box 164 \ 4 img105 | |
| The testing of batteries for French RR chassis. | 3rd May 1933 | Box 164 \ 4 img106 | |
| Severely corroded battery box on chassis 27-EX requiring examination and potential replacement. | 1st Jun 1933 | Box 164 \ 4 img107 | |
| Letter discussing the feasibility of using the dynamo on a Light Tank engine to charge two batteries. | 26th Jun 1933 | Box 164 \ 4 img108 | |
| Enquiry from the Armaments Inspection Department regarding the dynamo capacity for powering a wireless set in tanks. | 23th Jun 1933 | Box 164 \ 4 img109 | |
| Feasibility of fitting two batteries to light tanks. | 27th Jun 1933 | Box 164 \ 4 img110 | |
| Sir Malcolm Campbell's request to test Young accumulators, considering existing arrangements with Peto & Radford. | 14th Jul 1933 | Box 164 \ 4 img111 | |
| Letter discussing the poor performance and failure of Young Accumulator Company batteries during testing. | 6th Jul 1933 | Box 164 \ 4 img112 | |
| Letter to Sir Malcolm Campbell regarding battery life and the company's reluctance to change suppliers from Exide and Peto & Radford. | 6th Jul 1933 | Box 164 \ 4 img113 | |
| Letter from The Young Accumulator Co. to Sir Malcolm Campbell regarding a battery failure and a request to supply batteries to specification. | 12th Jul 1933 | Box 164 \ 4 img114 | |
| Battery supplier quality and the decision to continue with existing suppliers Exide and P.&.R. | 17th Jul 1933 | Box 164 \ 4 img115 | |
| Confirming a report on battery tests for French chassis has been sent. | 11th Sep 1933 | Box 164 \ 4 img116 | |
| The testing of French Accu-Slem batteries for use on chassis in France. | 11th Sep 1933 | Box 164 \ 4 img117 | |
| The performance and capacity testing of 12-volt and 6-volt batteries, including details on cell weaknesses and discharge rates. | 11th Sep 1933 | Box 164 \ 4 img118 | |
| Report concluding that two tested batteries are inferior to the standard type and not recommended for French R.R. chassis. | 11th Sep 1933 | Box 164 \ 4 img119 | |
| Graph showing high-rate discharge curves for a 20/25 HP type battery, comparing a new battery with one after 14 weeks of service. | 5th Sep 1935 | Box 164 \ 4 img120 | |
| Graph illustrating battery discharge characteristics over time, showing multiple voltage and amperage readings. | 9th May 1933 | Box 164 \ 4 img121 | |
| Graph showing curves of high-rate discharge tests on a 6-volt Slem 40-50 type battery. | 9th May 1933 | Box 164 \ 4 img122 | |
| Letter from The Chloride Electrical Storage Company Limited proposing a meeting time. | 29th Sep 1933 | Box 164 \ 4 img123 | |
| Letter to The Chloride Electrical Storage Co. Ltd. postponing a meeting with Mr. Lockton. | 30th Sep 1933 | Box 164 \ 4 img124 | |
| Letter from the Chloride Electrical Storage Company acknowledging a letter and arranging a deferred visit. | 2nd Oct 1933 | Box 164 \ 4 img125 | |
| Proposals and a booklet from Alklum Storage Batteries Ltd. | 27th Oct 1933 | Box 164 \ 4 img126 | |
| Letter from Alklum Storage Batteries Limited providing technical specifications for a 12-volt, 60-ampere-hour battery. | 21th Oct 1933 | Box 164 \ 4 img127 | |
| Copy of a letter from Alklum Storage Batteries Ltd. regarding battery specifications, pricing, and guarantee. | 30th Oct 1933 | Box 164 \ 4 img128 | |
| Letter to Chloride Electrical Storage Co. Ltd. regarding battery life concerns with a new dynamo control system and testing an experimental battery. | 30th Oct 1933 | Box 164 \ 4 img129 | |
| Letter from The Chloride Electrical Storage Company regarding battery operation with a new vibrator control system. | 31th Oct 1933 | Box 164 \ 4 img130 | |
| Letter of query to Alklum Storage Batteries Ltd regarding battery capacity, maximum discharge, and internal resistance. | 31th Oct 1933 | Box 164 \ 4 img131 | |
| Letter to Alklum Storage Batteries Ltd. with queries regarding battery specifications. | 31th Oct 1933 | Box 164 \ 4 img132 | |
| Letter requesting further particulars about a proposed battery, specifically its weight and dimensions. | 2nd Nov 1933 | Box 164 \ 4 img133 | |
| Letter from Alklum Storage Batteries discussing battery specifications and performance in response to queries. | 2nd Nov 1933 | Box 164 \ 4 img134 | |
| Letter from Alklum Storage Batteries Ltd. detailing battery specifications and testing methods. | 4th Nov 1933 | Box 164 \ 4 img135 | |
| Analysing Alklum batteries, recommending not to proceed with a trial due to their weight, bulk, and cost compared to the standard 20/25 chassis battery. | 4th Nov 1933 | Box 164 \ 4 img136 | |
| Comparison table of specifications for Alklum and Exide batteries. | 6th Nov 1933 | Box 164 \ 4 img137 | |
| Letter regarding six sample vent plugs of a new design sent for testing on a battery. | 6th Nov 1933 | Box 164 \ 4 img138 | |
| Letter requesting full particulars of batteries supplied to the Air Ministry for fitting to aeroplanes. | 29th Jan 1934 | Box 164 \ 4 img139 | |
| Letter from The Chloride Electrical Storage Company acknowledging a request for particulars on various types of aeroplane batteries. | 30th Jan 1934 | Box 164 \ 4 img140 | |
| Letter from The Chloride Electrical Storage Co. Ltd. providing particulars and prices for 12-volt Aeroplane batteries. | 31th Jan 1934 | Box 164 \ 4 img141 | |
| Blueprint for 12 Volt 'LZP' batteries in a container with a hinged lid and inspection flap. | 2nd Dec 1933 | Box 164 \ 4 img142 | |
| Request for the approximate weight of various chassis batteries for different car models. | 22th Mar 1934 | Box 164 \ 4 img143 | |
| Listing the approximate weights of various chassis batteries. | 23th Mar 1934 | Box 164 \ 4 img144 | |
| Follow-up letter regarding the testing of six sample vent plugs. | 3rd Apr 1934 | Box 164 \ 4 img145 | |
| Letter to Chloride Electrical Storage Co.Ltd regarding a delayed reply on tests for a new type stopper. | 23th Apr 1934 | Box 164 \ 4 img146 | |
| Letter to The Chloride Electrical Storage Co. Ltd. requesting an opinion on a new battery additive called 'Acculight'. | 25th Apr 1934 | Box 164 \ 4 img147 | |
| Letter from The Chloride Electrical Storage Company discussing a battery additive or 'dope'. | 26th Apr 1934 | Box 164 \ 4 img148 | |
| Letter from Chloride Electrical Storage Company regarding potential battery additives or 'dope'. | 4th May 1934 | Box 164 \ 4 img149 | |
| Experimental test of a product named Acculight. | 4th May 1934 | Box 164 \ 4 img150 | |
| Letter from The Notts & Derby Acculight Co. providing instructions for using 'Acculight' in new batteries. | 10th May 1934 | Box 164 \ 4 img151 | |
| Order for twelve battery cell vents for two different battery types. | 14th May 1934 | Box 164 \ 4 img152 | |
| Letter regarding the investigation and testing of 'Acculight', a substitute electrolyte for sulphuric acid. | 14th May 1934 | Box 164 \ 4 img153 | |
| Letter from The Chloride Electrical Storage Company arranging a meeting in Derby. | 14th May 1934 | Box 164 \ 4 img154 | |
| Letter from an accumulator manufacturer discussing the untested patent electrolyte 'Acculight'. | 17th May 1934 | Box 164 \ 4 img155 | |
| Letter from Chloride Electrical Storage Co. Ltd. regarding a technical note on 'Nemolyt' battery dope. | 24th May 1934 | Box 164 \ 4 img156 | |
| Laboratory analysis and note on the effects of 'Nemolyt' battery dope. | 12th May 1934 | Box 164 \ 4 img157 | |
| Test report comparing the performance of battery cells with and without the 'Nemolyt' additive. | 12th May 1934 | Box 164 \ 4 img158 | |
| Request to obtain 12 fibre end plates from Messrs. Sankey as per drawing D.54297. | 30th May 1934 | Box 164 \ 4 img159 | |
| Standardisation of a battery box with special indents to hold the battery. | 1st Jun 1934 | Box 164 \ 4 img160 | |
| Standardisation of parts for a battery box with special instrument to hold a battery. | 16th Jun 1934 | Box 164 \ 4 img161 | |
| Letter from Alklum Storage Batteries Limited regarding alkaline batteries for motor cars and other vehicles. | 3rd Jul 1934 | Box 164 \ 4 img162 | |
| Request to order two 12 volt batteries for the single cylinder test houses. | 15th Jul 1935 | Box 164 \ 4 img163 | |
| Order for two 12-volt standard Bentley and 20/25 chassis batteries for the Single Cylinder Test Houses. | 16th Jul 1935 | Box 164 \ 4 img164 | |
| Letter requesting a new Exide battery for Mr. E.R. Hall's racing Bentley for the Ulster T.T. race. | 21th Jul 1934 | Box 164 \ 4 img165 | |
| Order for battery charging clips from a supplier. | 21th Jul 1934 | Box 164 \ 4 img166 | |
| Letter from The Chloride Electrical Storage Company regarding an Exide battery for Mr. E.R. Hall's Racing Bentley. | 23th Jul 1934 | Box 164 \ 4 img167 | |
| Letter from The Falcon Accumulator Co. offering a battery for testing purposes. | 30th Aug 1934 | Box 164 \ 4 img168 | |
| Follow-up letter from Falcon Accumulator Co. suggesting to send an accumulator for testing and a possible order. | 29th Aug 1934 | Box 164 \ 4 img169 | |
| Letter requesting further information about a battery from Falcon Accumulator Co. | 31th Aug 1934 | Box 164 \ 4 img170 | |
| Letter from Falcon Accumulator Co. responding to queries about the materials and manufacturing of their accumulators. | 4th Sep 1934 | Box 164 \ 4 img171 | |
| Letter from Falcon Accumulator Co. confirming the preparation of a 12 volt, 13 plate, 85 ampere-hour accumulator. | 6th Sep 1934 | Box 164 \ 4 img172 | |
| Request for an invoice for an Exide battery fitted to a Bentley for the Ulster T.T. race. | 7th Sep 1934 | Box 164 \ 4 img173 | |
| Letter from The D.P. Battery Company Limited proposing their 'Kathanode' type batteries for cars. | 7th Sep 1934 | Box 164 \ 4 img174 | |
| Letter to D.P. Battery Co. Ltd. regarding a quotation for car batteries. | 11th Sep 1934 | Box 164 \ 4 img175 | |
| Order request for a battery for a 2nd Spectre chassis. | 11th Sep 1934 | Box 164 \ 4 img176 | |
| Letter from Peto & Radford about the second edition of their catalogue for Dagenite aircraft accumulators. | 27th Sep 1934 | Box 164 \ 4 img177 | |
| Letter from Falcon Accumulators regarding a delay in delivering a 12-volt battery for testing purposes. | 5th Oct 1934 | Box 164 \ 4 img178 | |
| Letter from Falcon Accumulator Co. confirming the delivery date of an accumulator. | 22th Oct 1934 | Box 164 \ 4 img179 | |
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