| Description | Date | Identifier | |
| Results of battery tests and a request to arrange the supply of a high rate discharge battery from Peto & Radford. | 11th Jun 1920 | Box 38 \ 5 Scan081 | |
| Letter quoting a price and lead time for a high discharge battery from Peto & Radford. | 23th Jun 1920 | Box 38 \ 5 Scan082 | |
| Urgent internal memo regarding the dispatch of light batteries for a boat to Messrs. Saunders. | 28th Jul 1920 | Box 38 \ 5 Scan083 | |
| Urging the immediate dispatch of lightweight batteries for a Saunders motor boat. | 29th Jul 1920 | Box 38 \ 5 Scan084 | |
| Preparation and despatch of P & R lightweight batteries for a Saunders Motor Boat (Maple Leaf Condor). | 29th Jul 1920 | Box 38 \ 5 Scan085 | |
| Expressing caution over using new 'Maple Leaf' lightweight batteries for the Condor engine, comparing them to a known Chloride battery. | 30th Jul 1920 | Box 38 \ 5 Scan086 | |
| Instruction sheet regarding the testing of a special P&R battery issued from stores. | 9th Aug 1920 | Box 38 \ 5 Scan087 | |
| Form for logging the routine treatment and testing of a car lighting and starting battery. | 11th Aug 1920 | Box 38 \ 5 Scan088 | |
| Battery test log detailing charging, density readings, and discharge performance. | 18th Aug 1920 | Box 38 \ 5 Scan089 | |
| Test results page detailing cell densities, charge, and discharge characteristics. | 31th Aug 1920 | Box 38 \ 5 Scan090 | |
| Test report detailing cell densities and charge measurements over a period of time. | 31th Aug 1920 | Box 38 \ 5 Scan091 | |
| Letter from battery supplier Peto & Radford comparing the performance of thin and thick plate batteries. | 14th Aug 1920 | Box 38 \ 5 Scan092 | |
| Extract discussing battery failures and the testing of a new P & R type battery on experimental cars. | 6th Sep 1920 | Box 38 \ 5 Scan093 | |
| From L.F. to Mr. Clark regarding the examination of battery plates from Willard, P & R, and Tudor. | 7th Sep 1920 | Box 38 \ 5 Scan094 | |
| Follow-up letter from Peto & Radford regarding the testing of a high discharge lighting and starting battery. | 14th Sep 1920 | Box 38 \ 5 Scan095 | |
| Good and bad points of a P&R H.D E 13 battery. | 16th Sep 1920 | Box 38 \ 5 Scan096 | |
| Issues with fragile porcelain vent plugs and acid spraying from a gassing battery. | 24th Jan 1919 | Box 38 \ 5 Scan097 | |
| Letter to Messrs. Peto & Radford postponing a report on the test of an H.D.13 battery. | 24th Sep 1920 | Box 38 \ 5 Scan098 | |
| The testing and characteristics of Battery No.40 from Peto & Radford, HDE13. | 6th Oct 1920 | Box 38 \ 5 Scan099 | |
| Extract from a memo detailing the progress of various batteries intended for use in experimental cars. | 13th Oct 1920 | Box 38 \ 5 Scan100 | |
| Query regarding the performance results of test batteries made by Peto & Radford, and a comparison to Chloride batteries. | 17th Dec 1920 | Box 38 \ 5 Scan101 | |
| Performance of four experimental Peto & Radford batteries, noting particularly poor results from battery No.14. | 18th Dec 1920 | Box 38 \ 5 Scan102 | |
| The performance and testing of various car batteries, including high rate discharge tests. | 18th Dec 1920 | Box 38 \ 5 Scan103 | |
| The establishment of a vibration test for batteries. | 18th Dec 1920 | Box 38 \ 5 Scan104 | |
| Letter regarding the trial of a No. 14 Peto & Radford battery on an Open Trials car to assess its life. | 22th Dec 1920 | Box 38 \ 5 Scan105 | |
| The supply of a Peto & Radford battery and the testing of other experimental parts. | 31th Dec 1920 | Box 38 \ 5 Scan106 | |
| Batteries for test cars, confirming one has been collected and another requires a new lid. | 1st Jan 1921 | Box 38 \ 5 Scan107 | |
| Notification of a P & R HDE 13 battery being fitted to the Instruction School Car. | 4th Jan 1921 | Box 38 \ 5 Scan108 | |
| Letter requesting an outside battery case and declining certain electrical components like Tungsten points or a Bleriot cut-out. | 6th Jan 1921 | Box 38 \ 5 Scan109 | |
| Request to the Pattern Shop to create a custom battery box for a P & R battery for a trials car. | 7th Jan 1921 | Box 38 \ 5 Scan110 | |
| The provision and testing of batteries and other electrical components. | 17th Jan 1921 | Box 38 \ 5 Scan111 | |
| Dispatch of a Peto & Radford battery for testing on a trials car. | 19th Jan 1921 | Box 38 \ 5 Scan112 | |
| The performance of a Smith dynamo and Peto Radford battery on a Trials car and Open Touring car. | 13th Apr 1921 | Box 38 \ 5 Scan113 | |
| Requesting feedback on the performance of a Peto & Radford PDL.9 battery. | 19th Apr 1921 | Box 38 \ 5 Scan114 | |
| Requesting feedback on the performance of a Peto & Radford HDE.13 battery fitted to a Demonstration Car. | 19th Apr 1921 | Box 38 \ 5 Scan115 | |
| Short memo confirming the effective performance of a Peto & Radford battery. | 20th Apr 1921 | Box 38 \ 5 Scan116 | |
| The excellent performance of a P & R PDL9 battery fitted to PN's car. | 10th Aug 1921 | Box 38 \ 5 Scan117 | |
| Requesting a performance report on a P & R Battery Type BDE.13 fitted to a School Car. | 10th Aug 1921 | Box 38 \ 5 Scan118 | |
| The condition of batteries in a demonstration car after 15,000 miles of use. | 9th Aug 1921 | Box 38 \ 5 Scan119 | |
| The performance and service testing of Peto & Radford batteries. | 12th Aug 1921 | Box 38 \ 5 Scan120 | |
| Technical memo comparing the performance, efficiency, weight, and capacity of different car batteries. | 12th Aug 1921 | Box 38 \ 5 Scan121 | |
| Comparison of C.A.V-Willard and U.S.A. Willard batteries, with a discussion on the efficiency and life of Exide cells. | 12th Aug 1921 | Box 38 \ 5 Scan122 | |
| The electrical efficiency and mechanical features of Peto & Radford batteries. | 24th Aug 1921 | Box 38 \ 5 Scan123 | |
| Comparing the performance of Peto & Radford batteries against competitors like Exide. | 25th Aug 1921 | Box 38 \ 5 Scan124 | |
| Performance and mechanical features of car batteries, focusing on corrosion issues. | 25th Aug 1921 | Box 38 \ 5 Scan125 | |
| Clarification on a previous memo concerning Peto & Radford Batteries and a brass washer. | 27th Aug 1921 | Box 38 \ 5 Scan126 | |
| Confidential memo discussing the performance of various storage batteries and recommending further testing of the Peto & Radford brand. | 30th Aug 1921 | Box 38 \ 5 Scan127 | |
| Continued memorandum listing desired features for batteries, prioritizing durability and charge retention. | 30th Aug 1921 | Box 38 \ 5 Scan128 | |
| Letter to Messrs. Peto & Radford regarding the performance of two types of lighting and starting batteries. | 2nd Sep 1921 | Box 38 \ 5 Scan129 | |
| Performance of two batteries and inquiring about ordering new ones from Peto & Radford. | 2nd Sep 1921 | Box 38 \ 5 Scan130 | |
| Letter discussing the choice between two types of batteries. | 5th Sep 1921 | Box 38 \ 5 Scan131 | |
| Peto & Radford batteries and the procurement of a C.A.V-Willard battery for the Goshawk experimental car. | 5th Sep 1921 | Box 38 \ 5 Scan132 | |
| Letter from an accumulator manufacturer discussing improvements to their batteries. | 6th Sep 1921 | Box 38 \ 5 Scan133 | |
| Letter from Peto & Radford comparing H.D.E. and P.D.L. battery performance and proposing a field test. | 1st Jul 1921 | Box 38 \ 5 Scan134 | |
| Letter discussing the return of Peto & Radford batteries for examination. | 7th Sep 1921 | Box 38 \ 5 Scan135 | |
| The trial of a C.A.V-Willard threaded rubber battery on a demonstration car. | 14th Sep 1921 | Box 38 \ 5 Scan136 | |
| Replacement of a P&R battery with a Tudor battery for a car, including logistical arrangements. | 15th Sep 1921 | Box 38 \ 5 Scan137 | |
| Instructions to replace a P & R battery with a standard battery on vehicle 81-TW and noting remarks on the 'Tudor' battery. | 16th Sep 1921 | Box 38 \ 5 Scan138 | |
| Instruction sheet regarding the performance of car batteries for a demonstration car. | 14th Sep 1921 | Box 38 \ 5 Scan139 | |
| Return of a Peto & Radford battery from a demonstration car for examination. | 19th Sep 1921 | Box 38 \ 5 Scan140 | |
| Letter to Messrs. Peto & Radford Co. Ltd. regarding the return of experimental P & R batteries for examination. | 19th Sep 1921 | Box 38 \ 5 Scan141 | |
| Letter from accumulator manufacturer Peto & Radford regarding the receipt and examination of lighting and starting batteries. | 21th Sep 1921 | Box 38 \ 5 Scan142 | |
| Letter to Peto & Radford Co. Ltd. regarding the supply of experimental batteries for a new small car. | 26th Sep 1921 | Box 38 \ 5 Scan143 | |
| Sourcing of Peto & Radford and Lucas batteries for the Goshawk model, following an issue with a C.A.V. Willard battery. | 26th Sep 1921 | Box 38 \ 5 Scan144 | |
| Letter from Peto & Radford discussing specifications for a smaller 12-volt battery. | 27th Sep 1921 | Box 38 \ 5 Scan145 | |
| Letter from Peto & Radford discussing battery connection options and a patent duplex bolt arrangement for mounting cells. | 28th Sep 1921 | Box 38 \ 5 Scan146 | |
| Letter to The Peto & Radford Acc. Co.Ltd. regarding 12-volt battery specifications and alterations. | 28th Sep 1921 | Box 38 \ 5 Scan147 | |
| Peto & Radford battery for the Goshawk model and associated battery box modifications. | 28th Sep 1921 | Box 38 \ 5 Scan148 | |
| Telephone call from Peto and Radford about sending a battery for examination and comparison. | 30th Sep 1921 | Box 38 \ 5 Scan149 | |
| The dispatch of a P & R battery and a potential inspection. | 1st Oct 1921 | Box 38 \ 5 Scan150 | |
| Report from Peto & Radford on the condition of P.D.L.9 batteries. | 8th Oct 1921 | Box 38 \ 5 Scan151 | |
| Report from Peto & Radford on the examination and condition of various batteries. | 8th Oct 1921 | Box 38 \ 5 Scan152 | |
| Letter from Peto & Radford detailing improvements to batteries and recommending specific models. | 8th Oct 1921 | Box 38 \ 5 Scan153 | |
| Letter from Peto & Radford regarding improvements to the 'Bull Dog' type product. | 8th Oct 1921 | Box 38 \ 5 Scan154 | |
| Acquisition and specifications of Peto & Radford batteries for the Goshawk project. | 10th Oct 1921 | Box 38 \ 5 Scan155 | |
| The examination of Peto & Radford batteries, recommending a new 'Bull Dog' type for testing and standardisation. | 10th Oct 1921 | Box 38 \ 5 Scan156 | |
| Battery design, specifically the ratio of acid volume to plate volume. | 10th Oct 1921 | Box 38 \ 5 Scan157 | |
| Experimentally ordering P & R 'BULL DOG' type B.D.11 batteries for potential standardisation. | 11th Oct 1921 | Box 38 \ 5 Scan158 | |
| Copy of a letter from Peto & Radford clarifying specifications for a quote on 'Bull Dog' batteries. | 13th Oct 1921 | Box 38 \ 5 Scan159 | |
| Outlining preferences for the design and installation of P & R Type BD.11 batteries. | 18th Oct 1921 | Box 38 \ 5 Scan160 | |
| Mr. Royce's decisions on sourcing and specifying batteries for the Goshawk II chassis. | 18th Oct 1921 | Box 38 \ 5 Scan161 | |
| Letter to Peto & Radford discussing the specifications and potential order for a small size 12-volt battery. | 19th Oct 1921 | Box 38 \ 5 Scan162 | |
| Copy of a letter from Peto & Radford concerning the dimensions and price of small size batteries. | 21th Oct 1921 | Box 38 \ 5 Scan163 | |
| Internal memorandum regarding the procurement and testing of new batteries for experimental chassis. | 24th Oct 1921 | Box 38 \ 5 Scan164 | |
| Ordering and trying out experimental batteries for the 'Goshawk' project. | 24th Oct 1921 | Box 38 \ 5 Scan165 | |
| The procurement and short-notice availability of C.A.V. Willard and P & R batteries. | 24th Oct 1921 | Box 38 \ 5 Scan166 | |
| Confirming arrangements for a modified battery box for the Goshawk to accommodate a Peto & Radford battery. | 24th Oct 1921 | Box 38 \ 5 Scan167 | |
| Letter to Messrs. Peto & Radford about modifying a battery box and ordering two small size batteries. | 25th Oct 1921 | Box 38 \ 5 Scan168 | |
| Letter from Peto & Radford concerning an increase in the dimensions for a small size battery. | 27th Oct 1921 | Box 38 \ 5 Scan169 | |
| Letter from Peto & Radford confirming revised dimensions for a small size battery, further to previous correspondence. | 29th Oct 1921 | Box 38 \ 5 Scan170 | |
| Extract from a letter received from Peto & Radford regarding the shipment of batteries. | 12th Nov 1921 | Box 38 \ 5 Scan171 | |
| Peto & Radford batteries for the Goshawk, with a cross-reference to another file. | 14th Nov 1921 | Box 38 \ 5 Scan172 | |
| Typed letter to Messrs. Peto & Radford regarding the arrangement of a visit. | 21th Nov 1921 | Box 38 \ 5 Scan173 | |
| Record of tests and usage for battery number 14, type P & R PDL9E. | 26th Sep 1921 | Box 38 \ 5 Scan174 | |
| Battery record log tracking service, mileage, and performance for battery number 40. | 6th Sep 1920 | Box 38 \ 5 Scan175 | |
| The receipt of three type BD11 batteries suitable for the 40/50 model. | 24th Nov 1921 | Box 38 \ 5 Scan176 | |
| Routine treatment, charging, and discharging tests of a car battery. | 24th Nov 1921 | Box 38 \ 5 Scan177 | |
| Chart recording from a 'Megger' electrical insulation test. | 9th Dec 1921 | Box 38 \ 5 Scan178 | |
| Battery charging, density readings, and performance measurements. | 9th Dec 1921 | Box 38 \ 5 Scan179 | |
| Chart recording of an electrical test with handwritten calculations for amperes and ampere-hours. | 9th Dec 1921 | Box 38 \ 5 Scan180 | |
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