Ring RPP900 Compact Jump Starter: Specifications and Safety Notes
At a glance
- What it is: A compact lithium iron phosphate (LiFePO4) jump starter and power bank sold under the Ring Automotive name.
- Key specifications: 12.8V 3000mAh; 240A start for 5 seconds and 600A peak; vehicles up to 2.0 litres; USB port and LED torch (UK retailer listing).
- Suits: Drivers of small and medium petrol cars who want a pocketable jump starter.
- Skip if: You have a larger or diesel engine. The listing rates it to 2.0 litres.
We haven’t tested this product ourselves. This page summarises one UK retailer’s listing, checked 19 October 2026. Ring’s own product page for the RPP900 returned a not-found error when we tried it.
Specifications
| Specification | Detail | Source |
|---|---|---|
| Product | Ring RPP900 Lithium Ion Phosphate Jump Pack | [1] |
| Battery | LiFePO4, 12.8V, 3000mAh | [1] |
| Current | 240A starting current for 5 seconds; 600A peak; maximum cranking time 5 seconds | [1] |
| Engine size | Vehicles up to 2.0 litres | [1] |
| Protections | Reverse polarity, short circuit and anti-spike | [1] |
| Extras | LED torch; 2.1A USB port for phones and tablets | [1] |
| Charging | 12V input, under 1.5A; no charge time given | [1] |
| Weight | 1.25 kg. Size not listed | [1] |
| Price | £89.99 sale (£99.99 regular); the listing showed out of stock on 19 October 2026 | [1] |
| Warranty | Not verified | n/a |
What owners report
We have not reviewed owner feedback for this product.
Known issues and safety
Recall check: we searched GOV.UK product safety alerts, reports and recalls (Office for Product Safety and Standards) for “ring automotive” on 19 October 2026. It lists a March 2023 recall of a different Ring jump starter, the RPPL360, for a fire risk from damaged battery cable sleeving in batches 38/21 and 05/23 [2][3]. That recall does not name the RPP900. Check your unit’s model number against it.
Follow the instructions supplied. The RAC advises not placing a jump starter on the engine and checking it is charged first [4].
Questions people ask
What engine size can it start?
Up to 2.0 litres, according to the retailer [1]. See our guide on what size jump starter you need.
Is it safe if I connect it the wrong way round?
The listing says it has reverse polarity and short circuit protection [1]. Still follow the connection order in the manual.
Is it still sold?
The retailer showed it out of stock [1].
Alternatives
- Other jump starters: See our jump starters hub.
Our verdict
Based on the evidence, this suits drivers of small and medium petrol cars who want a compact lithium jump starter. We could not confirm warranty or size, and the retailer listing was out of stock. This is a research summary, not a test result.
Sources
- RING RPP900 Lithium Ion Phosphate Jump Pack, Leisure Battery (UK retailer listing), leisurebattery.net. The page shows no date. Checked 19 October 2026.
- GOV.UK search of product safety alerts, reports and recalls for “ring automotive”, Office for Product Safety and Standards, gov.uk. Searched 19 October 2026.
- Product Recall: Ring RPPL360 Fast Charge Lithium Jump Starter (2303-0111), Office for Product Safety and Standards. Dated 27 March 2023, gov.uk. Checked 19 October 2026.
- How to jump start a car in 10 steps, RAC Drive. Dated 10 September 2026, rac.co.uk. Checked 19 October 2026.